More API doc

QString -> const QString&
QString = 0l -> QString::null

26 files changed, 630 insertions, 246 deletions

diff --git a/libopie/pim/obackendfactory.h b/libopie/pim/obackendfactory.h
index 3a73210..ad6cf5a 100644
--- a/libopie/pim/obackendfactory.h
+++ b/libopie/pim/obackendfactory.h
@@ -1,102 +1,126 @@
 /*
  * Class to manage Backends.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Use plugins
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.6  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.5  2003/02/21 23:31:52  zecke
  * Add XML datebookresource
  * -clean up todoaccessxml header
  * -implement some more stuff in the oeven tester
  * -extend DefaultFactory to not crash and to use datebook
  *
  * -reading of OEvents is working nicely.. saving will be added
  *  tomorrow
  *  -fix spelling in ODateBookAcces
  *
  * Revision 1.4  2002/10/14 15:55:18  eilers
  * Redeactivate SQL.. ;)
  *
  * Revision 1.3  2002/10/10 17:08:58  zecke
  * The Cache is finally in place
  * I tested it with my todolist and it 'works' for 10.000 todos the hits are awesome ;)
  * The read ahead functionality does not make sense for XMLs backends because most of the stuff is already in memory. While using readahead on SQL makes things a lot faster....
  * I still have to fully implement read ahead
  * This change is bic but sc
  *
  * Revision 1.2  2002/10/08 09:27:36  eilers
  * Fixed libopie.pro to include the new pim-API.
  * The SQL-Stuff is currently deactivated. Otherwise everyone who wants to
  * compile itself would need to install libsqlite, libopiesql...
  * Therefore, the backend currently uses XML only..
  *
  * Revision 1.1  2002/10/07 17:35:01  eilers
  * added OBackendFactory for advanced backend access
  *
  *
  * =====================================================================
  */
 #ifndef OPIE_BACKENDFACTORY_H_
 #define OPIE_BACKENDFACTORY_H_
 
 #include <qstring.h>
 #include <qasciidict.h>
 #include <qpe/config.h>
 
 #include "otodoaccessxml.h"
 #include "ocontactaccessbackend_xml.h"
 #include "odatebookaccessbackend_xml.h"
 
 #ifdef __USE_SQL
 #include "otodoaccesssql.h"
 #endif
 
-
+/**
+ * This class is our factory. It will give us the default implementations
+ * of at least Todolist, Contacts and Datebook. In the future this class will
+ * allow users to switch the backend with ( XML->SQLite ) without the need
+ * to recompile.#
+ * This class as the whole PIM Api is making use of templates
+ *
+ * <pre>
+ *   OTodoAccessBackend* backend = OBackEndFactory<OTodoAccessBackend>::Default("todo", QString::null );
+ *   backend->load();
+ * </pre>
+ *
+ * @author Stefan Eilers
+ * @version 0.1
+ */
 template<class T>
 class OBackendFactory
 {
  public:
 	OBackendFactory() {};
 
 	enum BACKENDS {
 		TODO,
 		CONTACT,
 		DATE
 	};
 
+        /**
+         * Returns a backend implementation for backendName
+         * @param backendName the type of the backend
+         * @param appName will be passed on to the backend
+         */
 	static T* Default( const QString backendName, const QString& appName ){
 
 		// __asm__("int3");
 
 		Config config( "pimaccess" );
 		config.setGroup ( backendName );
 		QString backend = config.readEntry( "usebackend" );
 
 		QAsciiDict<int> dict ( 3 );
 		dict.setAutoDelete ( TRUE );
 
 		dict.insert( "todo", new int (TODO) );
 		dict.insert( "contact", new int (CONTACT) );
                 dict.insert( "datebook", new int(DATE) );
 
 		qWarning ("TODO is: %d", TODO);
 		qWarning ("CONTACT is: %d", CONTACT);
 
                 int *find = dict[ backendName ];
                 if (!find ) return 0;
 
 		switch ( *find ){
 		case TODO:
 #ifdef __USE_SQL
diff --git a/libopie/pim/ocontact.h b/libopie/pim/ocontact.h
index 1fd1c75..25fa0e7 100644
--- a/libopie/pim/ocontact.h
+++ b/libopie/pim/ocontact.h
@@ -13,50 +13,57 @@
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #ifndef __OCONTACT_H__
 #define __OCONTACT_H__
 
 #include <opie/opimrecord.h>
 #include <qpe/recordfields.h>
 
 #include <qdatetime.h>
 #include <qstringlist.h>
 
 #if defined(QPC_TEMPLATEDLL)
 // MOC_SKIP_BEGIN
 QPC_TEMPLATEEXTERN template class QPC_EXPORT QMap<int, QString>;
 // MOC_SKIP_END
 #endif
 
-class ContactPrivate; 
-
+class ContactPrivate;
+
+/**
+ * OContact class represents a specialised PIM Record for contacts.
+ * It does store all kind of persopn related information.
+ *
+ * @short Contact Container
+ * @author TT, Stefan Eiler, Holger Freyther
+ */
 class QPC_EXPORT OContact : public OPimRecord
 {
     friend class DataSet;
 public:
     OContact();
     OContact( const QMap<int, QString> &fromMap );
     virtual ~OContact();
 
     /*
      * do we need to inline them
      * if yes do we need to inline them this way?
      * -zecke
      */
     void setTitle( const QString &v ) { replace( Qtopia::Title, v ); }
     void setFirstName( const QString &v ) { replace( Qtopia::FirstName, v ); }
     void setMiddleName( const QString &v ) { replace( Qtopia::MiddleName, v ); }
     void setLastName( const QString &v ) { replace( Qtopia::LastName, v ); }
     void setSuffix( const QString &v ) { replace( Qtopia::Suffix, v ); }
     void setFileAs( const QString &v ) { replace( Qtopia::FileAs, v ); }
     void setFileAs();
 
     // default email address
     void setDefaultEmail( const QString &v );
     // inserts email to list and ensure's doesn't already exist
diff --git a/libopie/pim/ocontactaccess.h b/libopie/pim/ocontactaccess.h
index 32b2dcb..d7ceaf2 100644
--- a/libopie/pim/ocontactaccess.h
+++ b/libopie/pim/ocontactaccess.h
@@ -1,126 +1,136 @@
 /*
  * Class to manage the Contacts.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  * Copyright (c) 2002 by Holger Freyther (zecke@handhelds.org)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Define enum for query settings
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.7  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.6  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
  * Revision 1.5  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.4  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * Revision 1.3  2002/10/16 10:52:40  eilers
  * Added some docu to the interface and now using the cache infrastucture by zecke.. :)
  *
  * Revision 1.2  2002/10/14 16:21:54  eilers
  * Some minor interface updates
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  * =====================================================================
  */
 #ifndef _OCONTACTACCESS_H
 #define _OCONTACTACCESS_H
 
 #include <qobject.h>
 
 #include <qpe/qcopenvelope_qws.h>
 
 #include <qvaluelist.h>
 #include <qfileinfo.h>
 
 #include "ocontact.h"
 #include "ocontactaccessbackend.h"
 #include "opimaccesstemplate.h"
 
-/** Class to access the contacts database.
+/**
+ * Class to access the contacts database.
  * This is just a frontend for the real database handling which is
  * done by the backend.
+ * This class is used to access the Contacts on a system. This class as any OPIE PIM
+ * class is backend independent.
+
  * @see OPimAccessTemplate
  */
 class OContactAccess: public QObject, public OPimAccessTemplate<OContact>
 {
     Q_OBJECT
 
  public:
-	/** Create Database with contacts (addressbook).
+	/**
+         * Create Database with contacts (addressbook).
 	 * @param appname Name of application which wants access to the database
 	 * (i.e. "todolist")
 	 * @param filename The name of the database file. If not set, the default one
 	 * is used.
 	 * @param backend Pointer to an alternative Backend. If not set, we will use
 	 * the default backend.
 	 * @param handlesync If <b>true</b> the database stores the current state
 	 * automatically if it receives the signals <i>flush()</i> and <i>reload()</i>
 	 * which are used before and after synchronisation. If the application wants
 	 * to react itself, it should be disabled by setting it to <b>false</b>
 	 * @see OContactAccessBackend
 	 */
 	OContactAccess (const QString appname, const QString filename = 0l,
                     OContactAccessBackend* backend = 0l, bool handlesync = true);
 	~OContactAccess ();
 
 	/** Constants for query.
 	 * Use this constants to set the query parameters.
 	 * Note: <i>query_IgnoreCase</i> just make sense with one of the other attributes !
 	 * @see queryByExample()
 	 */
 	enum QuerySettings {
 		WildCards  = 0x0001,
 		IgnoreCase = 0x0002,
 		RegExp     = 0x0004,
 		ExactMatch = 0x0008,
 		MatchOne   = 0x0010, // Only one Entry must match
 		DateDiff   = 0x0020, // Find all entries from today until given date
 		DateYear   = 0x0040, // The year matches
 		DateMonth  = 0x0080, // The month matches
 		DateDay    = 0x0100, // The day matches
 	};
 
-	
+
 	ORecordList<OContact> matchRegexp(  const QRegExp &r )const;
 
 	/** Return all Contacts in a sorted manner.
 	 *  @param ascending true: Sorted in acending order.
 	 *  @param sortOrder Currently not implemented. Just defined to stay compatible to otodoaccess
 	 *  @param sortFilter Currently not implemented. Just defined to stay compatible to otodoaccess
 	 *  @param cat Currently not implemented. Just defined to stay compatible to otodoaccess
 	 */
 	List sorted( bool ascending, int sortOrder, int sortFilter, int cat ) const;
 
 	/** Return all possible settings.
 	 *  @return All settings provided by the current backend
 	 * (i.e.: query_WildCards & query_IgnoreCase)
 	 */
 	const uint querySettings();
 
 	/** Check whether settings are correct.
 	 * @return <i>true</i> if the given settings are correct and possible.
 	 */
 	bool hasQuerySettings ( int querySettings ) const;
 
 	/**
 	 * if the resource was changed externally.
 	 * You should use the signal instead of polling possible changes !
diff --git a/libopie/pim/ocontactaccessbackend.h b/libopie/pim/ocontactaccessbackend.h
index 821f5bf..ebeb42d 100644
--- a/libopie/pim/ocontactaccessbackend.h
+++ b/libopie/pim/ocontactaccessbackend.h
@@ -1,85 +1,107 @@
 /**
  * The class responsible for managing a backend.
  * The implementation of this abstract class contains
  * the complete database handling.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  * Copyright (c) 2002 by Holger Freyther (zecke@handhelds.org)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Define enum for query settings
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.5  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.4  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.3  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  * =====================================================================
  *
  */
 
 #ifndef _OCONTACTACCESSBACKEND_H_
 #define _OCONTACTACCESSBACKEND_H_
 
 #include "ocontact.h"
 #include "opimaccessbackend.h"
 
-#include "qregexp.h"
+#include <qregexp.h>
 
+/**
+ * This class represents the interface of all Contact Backends.
+ * Derivates of this class will be used to access the contacts.
+ * As implementation currently XML and vCard exist. This class needs to be implemented
+ * if you want to provide your own storage.
+ * In all queries a list of uids is passed on instead of loading the actual record!
+ *
+ * @see OContactAccessBackend_VCard
+ * @see OContactAccessBackend_XML
+ */
 class OContactAccessBackend: public OPimAccessBackend<OContact> {
  public:
 	OContactAccessBackend() {}
 	virtual ~OContactAccessBackend() {}
 
 
-	/** Return if database was changed externally.
+	/**
+         * Return if database was changed externally.
 	 * This may just make sense on file based databases like a XML-File.
 	 * It is used to prevent to overwrite the current database content
 	 * if the file was already changed by something else !
 	 * If this happens, we have to reload before save our data.
 	 * If we use real databases, this should be handled by the database
 	 * management system themselve, therefore this function should always return false in
 	 * this case. It is not our problem to handle this conflict ...
 	 * @return <i>true</i> if the database was changed and if save without reload will
 	 * be dangerous. <i>false</i> if the database was not changed or it is save to write
 	 * in this situation.
 	 */
 	virtual bool wasChangedExternally() = 0;
 
 	virtual QArray<int> matchRegexp(  const QRegExp &r ) const = 0;
 
-	/** Return all possible settings.
+	/**
+         *  Return all possible settings.
 	 *  @return All settings provided by the current backend
 	 * (i.e.: query_WildCards & query_IgnoreCase)
 	 */
 	virtual const uint querySettings() = 0;
 
-	/** Check whether settings are correct.
+	/**
+         * Check whether settings are correct.
 	 * @return <i>true</i> if the given settings are correct and possible.
 	 */
 	virtual bool hasQuerySettings (uint querySettings) const = 0;
 
-	virtual QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat ) = 0;
+        /**
+         * FIXME!!!
+         * Returns a sorted list of records either ascendinf or descending for a giving criteria and category
+         */
+        virtual QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat ) = 0;
 
 };
 #endif
diff --git a/libopie/pim/ocontactaccessbackend_vcard.cpp b/libopie/pim/ocontactaccessbackend_vcard.cpp
index f24523f..270bef3 100644
--- a/libopie/pim/ocontactaccessbackend_vcard.cpp
+++ b/libopie/pim/ocontactaccessbackend_vcard.cpp
@@ -1,43 +1,48 @@
 /*
  * VCard Backend for the OPIE-Contact Database.
  *
  * Copyright (C) 2000 Trolltech AS.  All rights reserved.
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo:
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.10  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.9  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.8  2003/02/21 16:52:49  zecke
  * -Remove old Todo classes they're deprecated and today I already using the
  * new API
  * -Guard against self assignment in OTodo
  * -Add test apps for OPIM
  * -Opiefied Event classes
  * -Added TimeZone handling and pinning of TimeZones to OEvent
  * -Adjust ORecur and the widget to better timezone behaviour
  *
  * Revision 1.7  2003/02/16 22:25:46  zecke
  * 0000276 Fix for that bug.. or better temp workaround
  * A Preferred Number is HOME|VOICE
  * A CellPhone is HOME|VOICE|CELL the type & HOME|VOICE test
  * triggers both
  * and the cell phone number overrides the other entries..
  *
@@ -55,49 +60,49 @@
  * Revision 1.5  2002/12/07 13:26:22  eilers
  * Fixing bug in storing anniversary..
  *
  * Revision 1.4  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.3  2002/11/11 16:41:09  kergoth
  * no default arguments in implementation
  *
  * Revision 1.2  2002/11/10 15:41:53  eilers
  * Bugfixes..
  *
  * Revision 1.1  2002/11/09 14:34:52  eilers
  * Added VCard Backend.
  *
  */
 #include "ocontactaccessbackend_vcard.h"
 #include "../../library/backend/vobject_p.h"
 #include "../../library/backend/qfiledirect_p.h"
 
 #include <qpe/timeconversion.h>
 
 #include <qfile.h>
 
-OContactAccessBackend_VCard::OContactAccessBackend_VCard ( QString , QString filename ):
+OContactAccessBackend_VCard::OContactAccessBackend_VCard ( const QString& , const QString& filename ):
 	m_dirty( false ),
 	m_file( filename )
 {
 	load();
 }
 
 
 bool OContactAccessBackend_VCard::load ()
 {
 	m_map.clear();
 	m_dirty = false;
 
 	VObject* obj = 0l;
 
 	if ( QFile::exists(m_file) ){
 		obj = Parse_MIME_FromFileName( QFile::encodeName(m_file).data() );
 		if ( !obj )
 			return false;
 	}else{
 		qWarning("File \"%s\" not found !", m_file.latin1() );
 		return false;
 	}
 
 	while ( obj ) {
diff --git a/libopie/pim/ocontactaccessbackend_vcard.h b/libopie/pim/ocontactaccessbackend_vcard.h
index 93e2da3..712d769 100644
--- a/libopie/pim/ocontactaccessbackend_vcard.h
+++ b/libopie/pim/ocontactaccessbackend_vcard.h
@@ -1,86 +1,96 @@
 /*
  * VCard Backend for the OPIE-Contact Database.
  *
  * Copyright (C) 2000 Trolltech AS.  All rights reserved.
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo:
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.6  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.5  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.4  2002/12/07 13:26:22  eilers
  * Fixing bug in storing anniversary..
  *
  * Revision 1.3  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.2  2002/11/10 15:41:53  eilers
  * Bugfixes..
  *
  * Revision 1.1  2002/11/09 14:34:52  eilers
  * Added VCard Backend.
  *
  */
 #ifndef __OCONTACTACCESSBACKEND_VCARD_H_
 #define __OCONTACTACCESSBACKEND_VCARD_H_
 
 #include <opie/ocontact.h>
 
 #include "ocontactaccessbackend.h"
 
 class VObject;
 
+/**
+ * This is the vCard 2.1 implementation of the Contact Storage
+ * @see OContactAccessBackend_XML
+ * @see OPimAccessBackend
+ */
 class OContactAccessBackend_VCard : public OContactAccessBackend {
  public:
-	OContactAccessBackend_VCard ( QString appname, QString filename = 0l );
+	OContactAccessBackend_VCard ( const QString& appname, const QString& filename = QString::null );
 
 	bool load ();
 	bool reload();
 	bool save();
 	void clear ();
 
 	bool add ( const OContact& newcontact );
 	bool remove ( int uid );
 	bool replace ( const OContact& contact );
-	
+
 	OContact find ( int uid ) const;
 	QArray<int> allRecords() const;
 	QArray<int> queryByExample ( const OContact &query, int settings, const QDateTime& d = QDateTime() );
 	QArray<int> matchRegexp(  const QRegExp &r ) const;
 
 	const uint querySettings();
 	bool hasQuerySettings (uint querySettings) const;
 	QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat );
 	bool wasChangedExternally();
-	
+
 private:
 	OContact parseVObject( VObject* obj );
 	VObject* createVObject( const OContact& c );
 	QString convDateToVCardDate( const QDate& c ) const;
 	QDate convVCardDateToDate( const QString& datestr );
 	VObject *safeAddPropValue( VObject *o, const char* prop, const QString& value );
 	VObject *safeAddProp( VObject* o, const char* prop);
-	
+
 	bool m_dirty : 1;
 	QString m_file;
 	QMap<int, OContact> m_map;
 };
 
 #endif
diff --git a/libopie/pim/ocontactaccessbackend_xml.cpp b/libopie/pim/ocontactaccessbackend_xml.cpp
index c5a7820..661cd51 100644
--- a/libopie/pim/ocontactaccessbackend_xml.cpp
+++ b/libopie/pim/ocontactaccessbackend_xml.cpp
@@ -1,43 +1,48 @@
 /*
  * XML Backend for the OPIE-Contact Database.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo: XML-Backend: Automatic reload if something was changed...
  *
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.5  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.4  2003/03/21 14:32:54  mickeyl
  * g++ compliance fix: default arguments belong into the declaration, but not the definition
  *
  * Revision 1.3  2003/03/21 12:26:28  eilers
  * Fixing small bug: If we search a birthday from today to today, it returned
  * every contact ..
  *
  * Revision 1.2  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.1.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.1.2.1  2003/02/10 15:31:38  eilers
  * Writing offsets to debug output..
  *
  * Revision 1.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
@@ -72,713 +77,713 @@
  * Revision 1.3  2002/10/14 16:21:54  eilers
  * Some minor interface updates
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  *
  */
 
 #include "ocontactaccessbackend_xml.h"
 
 #include <qasciidict.h>
 #include <qdatetime.h>
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
 #include <qarray.h>
 #include <qmap.h>
-#include <qdatetime.h> 
+#include <qdatetime.h>
 
 #include <qpe/global.h>
 
 #include <opie/xmltree.h>
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <stdlib.h>
 #include <errno.h>
 
 using namespace Opie;
 
 
-OContactAccessBackend_XML::OContactAccessBackend_XML ( QString appname, QString filename ):
+OContactAccessBackend_XML::OContactAccessBackend_XML ( const QString& appname, const QString& filename ):
 	m_changed( false )
 {
 	// Just m_contactlist should call delete if an entry
 	// is removed.
 	m_contactList.setAutoDelete( true );
 	m_uidToContact.setAutoDelete( false );
 
 	m_appName = appname;
-	
+
 	/* Set journalfile name ... */
 	m_journalName = getenv("HOME");
 	m_journalName +="/.abjournal" + appname;
-	
+
 	/* Expecting to access the default filename if nothing else is set */
 	if ( filename.isEmpty() ){
 		m_fileName = Global::applicationFileName( "addressbook","addressbook.xml" );
 	} else
 		m_fileName = filename;
-	
+
 	/* Load Database now */
 	load ();
 }
 
-bool OContactAccessBackend_XML::save() 
+bool OContactAccessBackend_XML::save()
 {
-	
+
 	if ( !m_changed )
 		return true;
-	
+
 	QString strNewFile = m_fileName + ".new";
 	QFile f( strNewFile );
 	if ( !f.open( IO_WriteOnly|IO_Raw ) )
 		return false;
-	
+
 	int total_written;
 	int idx_offset = 0;
 	QString out;
 
 	// Write Header
 	out = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE Addressbook ><AddressBook>\n"
 		" <Groups>\n"
 		" </Groups>\n"
 		" <Contacts>\n";
 	QCString cstr = out.utf8();
 	f.writeBlock( cstr.data(), cstr.length() );
 	idx_offset += cstr.length();
 	out = "";
 
 	// Write all contacts
 	QListIterator<OContact> it( m_contactList );
 	for ( ; it.current(); ++it ) {
 		qWarning(" Uid %d at Offset: %x", (*it)->uid(), idx_offset );
 		out += "<Contact ";
 		(*it)->save( out );
 		out += "/>\n";
 		cstr = out.utf8();
 		total_written = f.writeBlock( cstr.data(), cstr.length() );
 		idx_offset += cstr.length();
 		if ( total_written != int(cstr.length()) ) {
 			f.close();
 			QFile::remove( strNewFile );
 			return false;
 		}
 		out = "";
 	}
 	out += " </Contacts>\n</AddressBook>\n";
-	
+
 	// Write Footer
 	cstr = out.utf8();
 	total_written = f.writeBlock( cstr.data(), cstr.length() );
 	if ( total_written != int( cstr.length() ) ) {
 		f.close();
 		QFile::remove( strNewFile );
 		return false;
 	}
 	f.close();
-	
+
 	// move the file over, I'm just going to use the system call
 	// because, I don't feel like using QDir.
 	if ( ::rename( strNewFile.latin1(), m_fileName.latin1() ) < 0 ) {
 		qWarning( "problem renaming file %s to %s, errno: %d",
 			  strNewFile.latin1(), m_journalName.latin1(), errno );
 		// remove the tmp file...
 		QFile::remove( strNewFile );
 	}
-	
+
 	/* The journalfile should be removed now... */
 	removeJournal();
-	
+
 	m_changed = false;
 	return true;
 }
 
-bool OContactAccessBackend_XML::load () 
+bool OContactAccessBackend_XML::load ()
 {
 	m_contactList.clear();
 	m_uidToContact.clear();
-	
+
 	/* Load XML-File and journal if it exists */
 	if ( !load ( m_fileName, false ) )
 		return false;
 	/* The returncode of the journalfile is ignored due to the
 	 * fact that it does not exist when this class is instantiated !
 	 * But there may such a file exist, if the application crashed.
 	 * Therefore we try to load it to get the changes before the #
 	 * crash happened...
 	 */
 	load (m_journalName, true);
-	
+
 	return true;
 }
 
-void OContactAccessBackend_XML::clear () 
+void OContactAccessBackend_XML::clear ()
 {
 	m_contactList.clear();
 	m_uidToContact.clear();
 
 	m_changed = false;
 }
 
 bool OContactAccessBackend_XML::wasChangedExternally()
 {
 	QFileInfo fi( m_fileName );
-	
+
 	QDateTime lastmod = fi.lastModified ();
-	
+
 	return (lastmod != m_readtime);
 }
 
-QArray<int> OContactAccessBackend_XML::allRecords() const 
+QArray<int> OContactAccessBackend_XML::allRecords() const
 {
 	QArray<int> uid_list( m_contactList.count() );
-	
-	uint counter = 0; 
+
+	uint counter = 0;
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		uid_list[counter++] = (*it)->uid();
 	}
-	
+
 	return ( uid_list );
 }
 
 OContact OContactAccessBackend_XML::find ( int uid ) const
 {
 	OContact foundContact; //Create empty contact
-	
+
 	OContact* found = m_uidToContact.find( QString().setNum( uid ) );
 
 	if ( found ){
 		foundContact = *found;
 	}
-	
+
 	return ( foundContact );
 }
 
-QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, int settings, 
+QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, int settings,
 							const QDateTime& d )
 {
-	
+
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
-	
+
 	for( ; it.current(); ++it ){
 		/* Search all fields and compare them with query object. Store them into list
 		 * if all fields matches.
 		 */
 		QDate* queryDate = 0l;
 		QDate* checkDate = 0l;
 		bool allcorrect = true;
 		for ( int i = 0; i < Qtopia::Groups; i++ ) {
 			// Birthday and anniversary are special nonstring fields and should
 			// be handled specially
 			switch ( i ){
 			case Qtopia::Birthday:
 				queryDate = new QDate( query.birthday() );
 				checkDate = new QDate( (*it)->birthday() );
 			case Qtopia::Anniversary:
 				if ( queryDate == 0l ){
 					queryDate = new QDate( query.anniversary() );
 					checkDate = new QDate( (*it)->anniversary() );
 				}
-				
+
 				if ( queryDate->isValid() ){
 					if(  checkDate->isValid() ){
 						if ( settings & OContactAccess::DateYear ){
 							if ( queryDate->year() != checkDate->year() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateMonth ){
 							if ( queryDate->month() != checkDate->month() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateDay ){
 							if ( queryDate->day() != checkDate->day() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateDiff ) {
 							QDate current;
 							// If we get an additional date, we
 							// will take this date instead of
-							// the current one.. 
+							// the current one..
 							if ( !d.date().isValid() )
 								current = QDate::currentDate();
 							else
 								current = d.date();
 
 							// We have to equalize the year, otherwise
 							// the search will fail..
-							checkDate->setYMD( current.year(), 
-									   checkDate->month(), 
+							checkDate->setYMD( current.year(),
+									   checkDate->month(),
 									   checkDate->day() );
 							if ( *checkDate < current )
-								checkDate->setYMD( current.year()+1, 
-										   checkDate->month(), 
+								checkDate->setYMD( current.year()+1,
+										   checkDate->month(),
 										   checkDate->day() );
 
 							// Check whether the birthday/anniversary date is between
 							// the current/given date and the maximum date
 							// ( maximum time range ) !
-							qWarning("Checking if %s is between %s and %s ! ", 
+							qWarning("Checking if %s is between %s and %s ! ",
 								 checkDate->toString().latin1(),
-								 current.toString().latin1(), 
+								 current.toString().latin1(),
 								 queryDate->toString().latin1() );
 							if ( current.daysTo( *queryDate ) >= 0 ){
-								if ( !( ( *checkDate >= current ) && 
+								if ( !( ( *checkDate >= current ) &&
 									( *checkDate <= *queryDate ) ) ){
 									allcorrect = false;
 									qWarning (" Nope!..");
 								}
 							}
 						}
 					} else{
 						// checkDate is invalid. Therefore this entry is always rejected
 						allcorrect = false;
 					}
 				}
-				
+
 				delete queryDate;
 				queryDate = 0l;
 				delete checkDate;
 				checkDate = 0l;
 				break;
 			default:
 				/* Just compare fields which are not empty in the query object */
 				if ( !query.field(i).isEmpty() ){
 					switch ( settings & ~( OContactAccess::IgnoreCase
 							       | OContactAccess::DateDiff
 							       | OContactAccess::DateYear
 							       | OContactAccess::DateMonth
 							       | OContactAccess::DateDay
-							       | OContactAccess::MatchOne 
+							       | OContactAccess::MatchOne
 							       ) ){
-						
+
 					case OContactAccess::RegExp:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       false );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::WildCards:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       true );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::ExactMatch:{
 						if (settings & OContactAccess::IgnoreCase){
 							if ( query.field(i).upper() !=
 							     (*it)->field(i).upper() )
 								allcorrect = false;
 						}else{
 							if ( query.field(i) != (*it)->field(i) )
 								allcorrect = false;
 						}
 					}
 						break;
 					}
 				}
 			}
 		}
 		if ( allcorrect ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 	}
-	
+
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
-	
+
 	return m_currentQuery;
 }
 
 QArray<int> OContactAccessBackend_XML::matchRegexp(  const QRegExp &r ) const
 {
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
-	
+
 	for( ; it.current(); ++it ){
 		if ( (*it)->match( r ) ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
-		
+
 	}
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
-	
+
 	return m_currentQuery;
 }
 
 const uint OContactAccessBackend_XML::querySettings()
 {
 	return ( OContactAccess::WildCards
 		 | OContactAccess::IgnoreCase
 		 | OContactAccess::RegExp
-		 | OContactAccess::ExactMatch 
+		 | OContactAccess::ExactMatch
 		 | OContactAccess::DateDiff
 		 | OContactAccess::DateYear
 		 | OContactAccess::DateMonth
 		 | OContactAccess::DateDay
 		 );
 }
 
 bool OContactAccessBackend_XML::hasQuerySettings (uint querySettings) const
 {
-	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay 
+	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay
 	 * may be added with any of the other settings. IgnoreCase should never used alone.
 	 * Wildcards, RegExp, ExactMatch should never used at the same time...
 	 */
-	
-	if ( querySettings == OContactAccess::IgnoreCase ) 
+
+	if ( querySettings == OContactAccess::IgnoreCase )
 		return false;
-	
+
 	switch ( querySettings & ~( OContactAccess::IgnoreCase
 				    | OContactAccess::DateDiff
 				    | OContactAccess::DateYear
 				    | OContactAccess::DateMonth
 				    | OContactAccess::DateDay
-				    ) 
+				    )
 		 ){
 	case OContactAccess::RegExp:
 		return ( true );
 	case OContactAccess::WildCards:
 		return ( true );
 	case OContactAccess::ExactMatch:
 		return ( true );
 	default:
 		return ( false );
 	}
 }
 
-// Currently only asc implemented.. 
-QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int ) 
+// Currently only asc implemented..
+QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int )
 {
 	QMap<QString, int> nameToUid;
 	QStringList names;
 	QArray<int> m_currentQuery( m_contactList.count() );
-	
-	// First fill map and StringList with all Names 
+
+	// First fill map and StringList with all Names
 	// Afterwards sort namelist and use map to fill array to return..
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		names.append( (*it)->fileAs() + QString::number( (*it)->uid() ) );
 		nameToUid.insert( (*it)->fileAs() + QString::number( (*it)->uid() ), (*it)->uid() );
 	}
 	names.sort();
-	
+
 	int i = 0;
 	if ( asc ){
 		for ( QStringList::Iterator it = names.begin(); it != names.end(); ++it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}else{
 		for ( QStringList::Iterator it = names.end(); it != names.begin(); --it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}
-	
+
 	return m_currentQuery;
-	
+
 }
 
 bool OContactAccessBackend_XML::add ( const OContact &newcontact )
 {
 	//qWarning("odefaultbackend: ACTION::ADD");
 	updateJournal (newcontact, ACTION_ADD);
 	addContact_p( newcontact );
-	
+
 	m_changed = true;
-	
+
 	return true;
 }
 
 bool OContactAccessBackend_XML::replace ( const OContact &contact )
 {
 	m_changed = true;
-	
+
 	OContact* found = m_uidToContact.find ( QString().setNum( contact.uid() ) );
 
 	if ( found ) {
 		OContact* newCont = new OContact( contact );
 
 		updateJournal ( *newCont, ACTION_REPLACE);
 		m_contactList.removeRef ( found );
 		m_contactList.append ( newCont );
 		m_uidToContact.remove( QString().setNum( contact.uid() ) );
 		m_uidToContact.insert( QString().setNum( newCont->uid() ), newCont );
 
 		qWarning("Nur zur Sicherheit: %d == %d ?",contact.uid(), newCont->uid());
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::remove ( int uid )
 {
 	m_changed = true;
-	
+
 	OContact* found = m_uidToContact.find ( QString().setNum( uid ) );
 
 	if ( found ) {
 		updateJournal ( *found, ACTION_REMOVE);
 		m_contactList.removeRef ( found );
 		m_uidToContact.remove( QString().setNum( uid ) );
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::reload(){
 	/* Reload is the same as load in this implementation */
 	return ( load() );
 }
 
 void OContactAccessBackend_XML::addContact_p( const OContact &newcontact )
 {
 	OContact* contRef = new OContact( newcontact );
 
 	m_contactList.append ( contRef );
 	m_uidToContact.insert( QString().setNum( newcontact.uid() ), contRef );
 }
 
 /* This function loads the xml-database and the journalfile */
-bool OContactAccessBackend_XML::load( const QString filename, bool isJournal ) 
+bool OContactAccessBackend_XML::load( const QString filename, bool isJournal )
 {
-	
+
 	/* We use the time of the last read to check if the file was
 	 * changed externally.
 	 */
 	if ( !isJournal ){
 		QFileInfo fi( filename );
 		m_readtime = fi.lastModified ();
 	}
-	
+
 	const int JOURNALACTION = Qtopia::Notes + 1;
 	const int JOURNALROW = JOURNALACTION + 1;
-	
+
 	bool foundAction = false;
 	journal_action action = ACTION_ADD;
 	int journalKey = 0;
 	QMap<int, QString> contactMap;
 	QMap<QString, QString> customMap;
 	QMap<QString, QString>::Iterator customIt;
 	QAsciiDict<int> dict( 47 );
-	
+
 	dict.setAutoDelete( TRUE );
 	dict.insert( "Uid", new int(Qtopia::AddressUid) );
 	dict.insert( "Title", new int(Qtopia::Title) );
 	dict.insert( "FirstName", new int(Qtopia::FirstName) );
 	dict.insert( "MiddleName", new int(Qtopia::MiddleName) );
 	dict.insert( "LastName", new int(Qtopia::LastName) );
 	dict.insert( "Suffix", new int(Qtopia::Suffix) );
 	dict.insert( "FileAs", new int(Qtopia::FileAs) );
 	dict.insert( "Categories", new int(Qtopia::AddressCategory) );
 	dict.insert( "DefaultEmail", new int(Qtopia::DefaultEmail) );
 	dict.insert( "Emails", new int(Qtopia::Emails) );
 	dict.insert( "HomeStreet", new int(Qtopia::HomeStreet) );
 	dict.insert( "HomeCity", new int(Qtopia::HomeCity) );
 	dict.insert( "HomeState", new int(Qtopia::HomeState) );
 	dict.insert( "HomeZip", new int(Qtopia::HomeZip) );
 	dict.insert( "HomeCountry", new int(Qtopia::HomeCountry) );
 	dict.insert( "HomePhone", new int(Qtopia::HomePhone) );
 	dict.insert( "HomeFax", new int(Qtopia::HomeFax) );
 	dict.insert( "HomeMobile", new int(Qtopia::HomeMobile) );
 	dict.insert( "HomeWebPage", new int(Qtopia::HomeWebPage) );
 	dict.insert( "Company", new int(Qtopia::Company) );
 	dict.insert( "BusinessStreet", new int(Qtopia::BusinessStreet) );
 	dict.insert( "BusinessCity", new int(Qtopia::BusinessCity) );
 	dict.insert( "BusinessState", new int(Qtopia::BusinessState) );
 	dict.insert( "BusinessZip", new int(Qtopia::BusinessZip) );
 	dict.insert( "BusinessCountry", new int(Qtopia::BusinessCountry) );
 	dict.insert( "BusinessWebPage", new int(Qtopia::BusinessWebPage) );
 	dict.insert( "JobTitle", new int(Qtopia::JobTitle) );
 	dict.insert( "Department", new int(Qtopia::Department) );
 	dict.insert( "Office", new int(Qtopia::Office) );
 	dict.insert( "BusinessPhone", new int(Qtopia::BusinessPhone) );
 	dict.insert( "BusinessFax", new int(Qtopia::BusinessFax) );
 	dict.insert( "BusinessMobile", new int(Qtopia::BusinessMobile) );
 	dict.insert( "BusinessPager", new int(Qtopia::BusinessPager) );
 	dict.insert( "Profession", new int(Qtopia::Profession) );
 	dict.insert( "Assistant", new int(Qtopia::Assistant) );
 	dict.insert( "Manager", new int(Qtopia::Manager) );
 	dict.insert( "Spouse", new int(Qtopia::Spouse) );
 	dict.insert( "Children", new int(Qtopia::Children) );
 	dict.insert( "Gender", new int(Qtopia::Gender) );
 	dict.insert( "Birthday", new int(Qtopia::Birthday) );
 	dict.insert( "Anniversary", new int(Qtopia::Anniversary) );
 	dict.insert( "Nickname", new int(Qtopia::Nickname) );
 	dict.insert( "Notes", new int(Qtopia::Notes) );
 	dict.insert( "action", new int(JOURNALACTION) );
 	dict.insert( "actionrow", new int(JOURNALROW) );
-	
+
 	//qWarning( "OContactDefaultBackEnd::loading %s", filename.latin1() );
-	
+
 	XMLElement *root = XMLElement::load( filename );
 	if(root != 0l ){ // start parsing
 		/* Parse all XML-Elements and put the data into the
 		 * Contact-Class
 		 */
 		XMLElement *element = root->firstChild();
 		//qWarning("OContactAccess::load tagName(): %s", root->tagName().latin1() );
 		element = element->firstChild();
-		
+
 		/* Search Tag "Contacts" which is the parent of all Contacts */
 		while( element && !isJournal ){
 			if( element->tagName() != QString::fromLatin1("Contacts") ){
 				//qWarning ("OContactDefBack::Searching for Tag \"Contacts\"! Found: %s",
 				//	  element->tagName().latin1());
 				element = element->nextChild();
 			} else {
 				element = element->firstChild();
 				break;
 			}
 		}
 		/* Parse all Contacts and ignore unknown tags */
 		while( element ){
 			if( element->tagName() != QString::fromLatin1("Contact") ){
 				//qWarning ("OContactDefBack::Searching for Tag \"Contact\"! Found: %s",
 				//	  element->tagName().latin1());
 				element = element->nextChild();
 				continue;
 			}
 			/* Found alement with tagname "contact", now parse and store all
 			 * attributes contained
 			 */
 			//qWarning("OContactDefBack::load element tagName() : %s",
 			//	 element->tagName().latin1() );
 			QString dummy;
 			foundAction = false;
-			
+
 			XMLElement::AttributeMap aMap = element->attributes();
 			XMLElement::AttributeMap::Iterator it;
 			contactMap.clear();
 			customMap.clear();
 			for( it = aMap.begin(); it != aMap.end(); ++it ){
 				// qWarning ("Read Attribute: %s=%s", it.key().latin1(),it.data().latin1());
-				
+
 				int *find = dict[ it.key() ];
 				/* Unknown attributes will be stored as "Custom" elements */
 				if ( !find ) {
 					qWarning("Attribute %s not known.", it.key().latin1());
 					//contact.setCustomField(it.key(), it.data());
 					customMap.insert( it.key(),  it.data() );
 					continue;
 				}
-				
+
 				/* Check if special conversion is needed and add attribute
 				 * into Contact class
 				 */
 				switch( *find ) {
 					/*
 					  case Qtopia::AddressUid:
 					  contact.setUid( it.data().toInt() );
 					  break;
 					  case Qtopia::AddressCategory:
 					  contact.setCategories( Qtopia::Record::idsFromString( it.data( )));
 					  break;
 					*/
 				case JOURNALACTION:
 					action = journal_action(it.data().toInt());
 					foundAction = true;
 					qWarning ("ODefBack(journal)::ACTION found: %d", action);
 					break;
 				case JOURNALROW:
 					journalKey = it.data().toInt();
 					break;
 				default: // no conversion needed add them to the map
 					contactMap.insert( *find, it.data() );
 					break;
 				}
 			}
 			/* now generate the Contact contact */
 			OContact contact( contactMap );
-			
+
 			for (customIt = customMap.begin(); customIt != customMap.end(); ++customIt ) {
 				contact.setCustomField( customIt.key(),  customIt.data() );
 			}
-			
+
 			if (foundAction){
 				foundAction = false;
 				switch ( action ) {
 				case ACTION_ADD:
 					addContact_p (contact);
 					break;
 				case ACTION_REMOVE:
 					if ( !remove (contact.uid()) )
 						qWarning ("ODefBack(journal)::Unable to remove uid: %d",
 							  contact.uid() );
 					break;
 				case ACTION_REPLACE:
 					if ( !replace ( contact ) )
 						qWarning ("ODefBack(journal)::Unable to replace uid: %d",
 							  contact.uid() );
 					break;
 				default:
 					qWarning ("Unknown action: ignored !");
 					break;
 				}
 			}else{
 				/* Add contact to list */
 				addContact_p (contact);
 			}
-			
+
 			/* Move to next element */
 			element = element->nextChild();
 		}
 	}else {
 		qWarning("ODefBack::could not load");
 	}
 	delete root;
 	qWarning("returning from loading" );
 	return true;
 }
 
 
 void OContactAccessBackend_XML::updateJournal( const OContact& cnt,
-					       journal_action action ) 
+					       journal_action action )
 {
 	QFile f( m_journalName );
 	bool created = !f.exists();
 	if ( !f.open(IO_WriteOnly|IO_Append) )
 		return;
-	
+
 	QString buf;
 	QCString str;
-	
+
 	// if the file was created, we have to set the Tag "<CONTACTS>" to
 	// get a XML-File which is readable by our parser.
 	// This is just a cheat, but better than rewrite the parser.
 	if ( created ){
 		buf = "<Contacts>";
 		QCString cstr = buf.utf8();
 		f.writeBlock( cstr.data(), cstr.length() );
 	}
-	
+
 	buf = "<Contact ";
 	cnt.save( buf );
 	buf += " action=\"" + QString::number( (int)action ) + "\" ";
 	buf += "/>\n";
 	QCString cstr = buf.utf8();
 	f.writeBlock( cstr.data(), cstr.length() );
 }
 
 void OContactAccessBackend_XML::removeJournal()
 {
 	QFile f ( m_journalName );
 	if ( f.exists() )
 		f.remove();
 }
 
diff --git a/libopie/pim/ocontactaccessbackend_xml.h b/libopie/pim/ocontactaccessbackend_xml.h
index 4d6a7ef..7b5365b 100644
--- a/libopie/pim/ocontactaccessbackend_xml.h
+++ b/libopie/pim/ocontactaccessbackend_xml.h
@@ -1,43 +1,48 @@
 /*
  * XML Backend for the OPIE-Contact Database.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo: XML-Backend: Automatic reload if something was changed...
  *
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.14  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.13  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.12.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.12.2.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
  * Revision 1.12  2003/01/03 16:58:03  eilers
  * Reenable debug output
  *
  * Revision 1.11  2003/01/03 12:31:28  eilers
  * Bugfix for calculating data diffs..
  *
  * Revision 1.10  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
@@ -63,82 +68,87 @@
  * Some minor interface updates
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  *
  */
 
 #ifndef _OContactAccessBackend_XML_
 #define _OContactAccessBackend_XML_
 
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <qlist.h>
 #include <qdict.h>
 
 /* the default xml implementation */
+/**
+ * This class is the XML implementation of a Contact backend
+ * it does implement everything available for OContact.
+ * @see OPimAccessBackend for more information of available methods
+ */
 class OContactAccessBackend_XML : public OContactAccessBackend {
  public:
-	OContactAccessBackend_XML ( QString appname, QString filename = 0l );
-	
+	OContactAccessBackend_XML ( const QString& appname, const QString& filename = QString::null );
+
 	bool save();
-	
+
 	bool load ();
 
 	void clear ();
-	
+
 	bool wasChangedExternally();
-	
+
 	QArray<int> allRecords() const;
-	
+
 	OContact find ( int uid ) const;
-	
+
 	QArray<int> queryByExample ( const OContact &query, int settings, const QDateTime& d = QDateTime() );
 
 	QArray<int> matchRegexp(  const QRegExp &r ) const;
-	
+
 	const uint querySettings();
-	
+
 	bool hasQuerySettings (uint querySettings) const;
-	
-	// Currently only asc implemented.. 
+
+	// Currently only asc implemented..
 	QArray<int> sorted( bool asc,  int , int ,  int );
 	bool add ( const OContact &newcontact );
-	
+
 	bool replace ( const OContact &contact );
-	
+
 	bool remove ( int uid );
 	bool reload();
-	
+
  private:
 
 	enum journal_action { ACTION_ADD, ACTION_REMOVE, ACTION_REPLACE };
 
 	void addContact_p( const OContact &newcontact );
-	
+
 	/* This function loads the xml-database and the journalfile */
 	bool load( const QString filename, bool isJournal );
-	
-	
+
+
 	void updateJournal( const OContact& cnt, journal_action action );
 	void removeJournal();
-	
+
  protected:
 	bool m_changed;
 	QString m_journalName;
 	QString m_fileName;
 	QString m_appName;
 	QList<OContact> m_contactList;
 	QDateTime m_readtime;
 
 	QDict<OContact> m_uidToContact;
 };
 
 #endif
diff --git a/libopie/pim/odatebookaccess.cpp b/libopie/pim/odatebookaccess.cpp
index 08e61ff..a3661a3 100644
--- a/libopie/pim/odatebookaccess.cpp
+++ b/libopie/pim/odatebookaccess.cpp
@@ -1,38 +1,66 @@
 #include "obackendfactory.h"
 #include "odatebookaccess.h"
 
+/**
+ * Simple constructor
+ * It takes a ODateBookAccessBackend as parent. If it is 0 the default implementation
+ * will be used!
+ * @param back The backend to be used or 0 for the default backend
+ * @param ac What kind of access is intended
+ */
 ODateBookAccess::ODateBookAccess( ODateBookAccessBackend* back, enum Access ac )
     : OPimAccessTemplate<OEvent>( back )
 {
     if (!back )
         back = OBackendFactory<ODateBookAccessBackend>::Default("datebook", QString::null );
 
     m_backEnd = back;
     setBackEnd( m_backEnd );
 }
 ODateBookAccess::~ODateBookAccess() {
 }
+
+/**
+ * @return all events available
+ */
 ODateBookAccess::List ODateBookAccess::rawEvents()const {
     QArray<int> ints = m_backEnd->rawEvents();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return all repeating events
+ */
 ODateBookAccess::List ODateBookAccess::rawRepeats()const {
     QArray<int> ints = m_backEnd->rawRepeats();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return all non repeating events
+ */
 ODateBookAccess::List ODateBookAccess::nonRepeats()const {
     QArray<int> ints = m_backEnd->nonRepeats();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return dates in the time span between from and to
+ * @param from Include all events from...
+ * @param to Include all events to...
+ */
 OEffectiveEvent::ValueList ODateBookAccess::effectiveEvents( const QDate& from, const QDate& to ) {
     return m_backEnd->effecticeEvents( from, to );
 }
+/**
+ * @return all events at a given datetime
+ */
 OEffectiveEvent::ValueList ODateBookAccess::effectiveEvents( const QDateTime& start ) {
     return m_backEnd->effecticeEvents( start );
 }
diff --git a/libopie/pim/odatebookaccess.h b/libopie/pim/odatebookaccess.h
index 7047039..7c7a63f 100644
--- a/libopie/pim/odatebookaccess.h
+++ b/libopie/pim/odatebookaccess.h
@@ -1,32 +1,41 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_H
 #define OPIE_DATE_BOOK_ACCESS_H
 
 #include "odatebookaccessbackend.h"
 #include "opimaccesstemplate.h"
 
 #include "oevent.h"
 
+/**
+ * This is the object orientated datebook database. It'll use OBackendFactory
+ * to query for a backend.
+ * All access to the datebook should be done via this class.
+ * Make sure to load and save the datebook this is not part of
+ * destructing and creating the object
+ *
+ * @author Holger Freyther
+ */
 class ODateBookAccess : public OPimAccessTemplate<OEvent> {
 public:
     ODateBookAccess( ODateBookAccessBackend* = 0l, enum Access acc = Random );
     ~ODateBookAccess();
 
-    /** return all events */
+    /* return all events */
     List rawEvents()const;
 
-    /** return repeating events */
+    /* return repeating events */
     List rawRepeats()const;
 
-    /** return non repeating events */
+    /* return non repeating events */
     List nonRepeats()const;
 
     OEffectiveEvent::ValueList effectiveEvents( const QDate& from, const QDate& to );
     OEffectiveEvent::ValueList effectiveEvents( const QDateTime& start );
 
 private:
     ODateBookAccessBackend* m_backEnd;
     class Private;
     Private* d;
 };
 
 #endif
diff --git a/libopie/pim/odatebookaccessbackend.h b/libopie/pim/odatebookaccessbackend.h
index eb6e8fb..86ff298 100644
--- a/libopie/pim/odatebookaccessbackend.h
+++ b/libopie/pim/odatebookaccessbackend.h
@@ -1,32 +1,73 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_BACKEND_H
 #define OPIE_DATE_BOOK_ACCESS_BACKEND_H
 
 #include <qarray.h>
 
 #include "opimaccessbackend.h"
 #include "oevent.h"
 
+/**
+ * This class is the interface to the storage of Events.
+ * @see OPimAccessBackend
+ *
+ */
 class ODateBookAccessBackend : public OPimAccessBackend<OEvent> {
 public:
     typedef int UID;
+
+    /**
+     * c'tor without parameter
+     */
     ODateBookAccessBackend();
     ~ODateBookAccessBackend();
 
+    /**
+     * This method should return a list of UIDs containing
+     * all events. No filter should be applied
+     * @return list of events
+     */
     virtual QArray<UID> rawEvents()const = 0;
+
+    /**
+     * This method should return a list of UIDs containing
+     * all repeating events. No filter should be applied
+     * @return list of repeating events
+     */
     virtual QArray<UID> rawRepeats()const = 0;
+
+    /**
+     * This mthod should return a list of UIDs containing all non
+     * repeating events. No filter should be applied
+     * @return list of nonrepeating events
+     */
     virtual QArray<UID> nonRepeats() const = 0;
 
     /**
-     * these two methods are used if you do not implement
-     * effectiveEvents...
+     * If you do not want to implement the effectiveEvents methods below
+     * you need to supply it with directNonRepeats.
+     * This method can return empty lists if effectiveEvents is implememted
      */
     virtual OEvent::ValueList directNonRepeats() = 0;
+
+    /**
+     * Same as above but return raw repeats!
+     */
     virtual OEvent::ValueList directRawRepeats() = 0;
 
     /* is implemented by default but you can reimplement it*/
+    /**
+     * Effective Events are special event occuring during a time frame. This method does calcualte
+     * EffectiveEvents bases on the directNonRepeats and directRawRepeats. You may implement this method
+     * yourself
+     */
     virtual OEffectiveEvent::ValueList effecticeEvents( const QDate& from, const QDate& to );
+
+    /**
+     * this is an overloaded member function
+     * @see effecticeEvents
+     */
     virtual OEffectiveEvent::ValueList effecticeEvents( const QDateTime& start );
 
 };
 
 #endif
diff --git a/libopie/pim/odatebookaccessbackend_xml.h b/libopie/pim/odatebookaccessbackend_xml.h
index 563c31f..7848f7c 100644
--- a/libopie/pim/odatebookaccessbackend_xml.h
+++ b/libopie/pim/odatebookaccessbackend_xml.h
@@ -1,31 +1,37 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_BACKEND_XML__H
 #define OPIE_DATE_BOOK_ACCESS_BACKEND_XML__H
 
 #include <qmap.h>
 
 #include "odatebookaccessbackend.h"
 
+/**
+ * This is the default XML implementation for DateBoook XML storage
+ * It fully implements the interface
+ * @see ODateBookAccessBackend
+ * @see OPimAccessBackend
+ */
 class ODateBookAccessBackend_XML : public ODateBookAccessBackend {
 public:
     ODateBookAccessBackend_XML( const QString& appName,
                                 const QString& fileName = QString::null);
     ~ODateBookAccessBackend_XML();
 
     bool load();
     bool reload();
     bool save();
 
     QArray<int> allRecords()const;
     QArray<int> queryByExample( const OEvent&, int, const QDateTime& d = QDateTime() );
     OEvent find( int uid )const;
     void clear();
     bool add( const OEvent& ev );
     bool remove( int uid );
     bool replace( const OEvent& ev );
 
     QArray<UID> rawEvents()const;
     QArray<UID> rawRepeats()const;
     QArray<UID> nonRepeats()const;
 
     OEvent::ValueList directNonRepeats();
     OEvent::ValueList directRawRepeats();
diff --git a/libopie/pim/oevent.h b/libopie/pim/oevent.h
index 585515c..57d32d0 100644
--- a/libopie/pim/oevent.h
+++ b/libopie/pim/oevent.h
@@ -9,68 +9,84 @@
 
 #include <qpe/recordfields.h>
 #include <qpe/palmtopuidgen.h>
 
 #include "otimezone.h"
 #include "opimrecord.h"
 
 struct OCalendarHelper {
     /** calculate the week number of the date */
     static int week( const QDate& );
     /** calculate the occurence of week days since the start of the month */
     static int ocurrence( const QDate& );
 
     // returns the dayOfWeek for the *first* day it finds (ignores
     // any further days!). Returns 1 (Monday) if there isn't any day found
     static int dayOfWeek( char day );
 
     /** returns the diff of month */
     static int monthDiff( const QDate& first, const QDate& second );
 
 };
 
 class OPimNotifyManager;
 class ORecur;
+
+/**
+ * This is the container for all Events. It encapsules all
+ * available information for a single Event
+ * @short container for events.
+ */
 class OEvent : public OPimRecord {
 public:
     typedef QValueList<OEvent> ValueList;
+    /**
+     * RecordFields contain possible attributes
+     */
     enum RecordFields {
         Uid = Qtopia::UID_ID,
         Category = Qtopia::CATEGORY_ID,
         Description,
         Location,
         Alarm,
         Reminder,
         Recurrence,
         Note,
         Created,
         StartDate,
         EndDate,
         AllDay,
         TimeZone
     };
 
+    /**
+     * Start with an Empty OEvent. UID == 0 means that it is empty
+     */
     OEvent(int uid = 0);
+
+    /**
+     * copy c'tor
+     */
     OEvent( const OEvent& );
     ~OEvent();
     OEvent &operator=( const OEvent& );
 
     QString description()const;
     void setDescription( const QString& description );
 
     QString location()const;
     void setLocation( const QString& loc );
 
     bool hasNotifiers()const;
     OPimNotifyManager &notifiers()const;
 
     ORecur recurrence()const;
     void setRecurrence( const ORecur& );
     bool hasRecurrence()const;
 
     QString note()const;
     void setNote( const QString& note );
 
 
     QDateTime createdDateTime()const;
     void setCreatedDateTime( const QDateTime& dt);
 
@@ -123,49 +139,48 @@ public:
 
     bool loadFromStream( QDataStream& );
     bool saveToStream( QDataStream& )const;
 
 /*    bool operator==( const OEvent& );
     bool operator!=( const OEvent& );
     bool operator<( const OEvent& );
     bool operator<=( const OEvent& );
     bool operator>( const OEvent& );
     bool operator>=(const OEvent& );
 */
 private:
     inline void changeOrModify();
     void deref();
     struct Data;
     Data* data;
     class Private;
     Private* priv;
 
 };
 
 /**
  * AN Event can span through multiple days. We split up a multiday eve
  */
-
 class OEffectiveEvent {
 public:
     typedef QValueList<OEffectiveEvent> ValueList;
     enum Position { MidWay, Start, End, StartEnd };
         // If we calculate the effective event of a multi-day event
     // we have to figure out whether we are at the first day,
     // at the end, or anywhere else ("middle"). This is important
     // for the start/end times (00:00/23:59)
     // MidWay: 00:00 -> 23:59, as we are "in the middle" of a multi-
     //         day event
     // Start: start time -> 23:59
     // End: 00:00 -> end time
     // Start | End == StartEnd: for single-day events (default)
     //                          here we draw start time -> end time
     OEffectiveEvent();
     OEffectiveEvent( const OEvent& event, const QDate& startDate, Position pos = StartEnd );
     OEffectiveEvent( const OEffectiveEvent& );
     OEffectiveEvent &operator=(const OEffectiveEvent& );
     ~OEffectiveEvent();
 
     void setStartTime( const QTime& );
     void setEndTime( const QTime& );
     void setEvent( const OEvent& );
     void setDate( const QDate& );
diff --git a/libopie2/opiepim/backend/obackendfactory.h b/libopie2/opiepim/backend/obackendfactory.h
index 3a73210..ad6cf5a 100644
--- a/libopie2/opiepim/backend/obackendfactory.h
+++ b/libopie2/opiepim/backend/obackendfactory.h
@@ -1,102 +1,126 @@
 /*
  * Class to manage Backends.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Use plugins
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.6  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.5  2003/02/21 23:31:52  zecke
  * Add XML datebookresource
  * -clean up todoaccessxml header
  * -implement some more stuff in the oeven tester
  * -extend DefaultFactory to not crash and to use datebook
  *
  * -reading of OEvents is working nicely.. saving will be added
  *  tomorrow
  *  -fix spelling in ODateBookAcces
  *
  * Revision 1.4  2002/10/14 15:55:18  eilers
  * Redeactivate SQL.. ;)
  *
  * Revision 1.3  2002/10/10 17:08:58  zecke
  * The Cache is finally in place
  * I tested it with my todolist and it 'works' for 10.000 todos the hits are awesome ;)
  * The read ahead functionality does not make sense for XMLs backends because most of the stuff is already in memory. While using readahead on SQL makes things a lot faster....
  * I still have to fully implement read ahead
  * This change is bic but sc
  *
  * Revision 1.2  2002/10/08 09:27:36  eilers
  * Fixed libopie.pro to include the new pim-API.
  * The SQL-Stuff is currently deactivated. Otherwise everyone who wants to
  * compile itself would need to install libsqlite, libopiesql...
  * Therefore, the backend currently uses XML only..
  *
  * Revision 1.1  2002/10/07 17:35:01  eilers
  * added OBackendFactory for advanced backend access
  *
  *
  * =====================================================================
  */
 #ifndef OPIE_BACKENDFACTORY_H_
 #define OPIE_BACKENDFACTORY_H_
 
 #include <qstring.h>
 #include <qasciidict.h>
 #include <qpe/config.h>
 
 #include "otodoaccessxml.h"
 #include "ocontactaccessbackend_xml.h"
 #include "odatebookaccessbackend_xml.h"
 
 #ifdef __USE_SQL
 #include "otodoaccesssql.h"
 #endif
 
-
+/**
+ * This class is our factory. It will give us the default implementations
+ * of at least Todolist, Contacts and Datebook. In the future this class will
+ * allow users to switch the backend with ( XML->SQLite ) without the need
+ * to recompile.#
+ * This class as the whole PIM Api is making use of templates
+ *
+ * <pre>
+ *   OTodoAccessBackend* backend = OBackEndFactory<OTodoAccessBackend>::Default("todo", QString::null );
+ *   backend->load();
+ * </pre>
+ *
+ * @author Stefan Eilers
+ * @version 0.1
+ */
 template<class T>
 class OBackendFactory
 {
  public:
 	OBackendFactory() {};
 
 	enum BACKENDS {
 		TODO,
 		CONTACT,
 		DATE
 	};
 
+        /**
+         * Returns a backend implementation for backendName
+         * @param backendName the type of the backend
+         * @param appName will be passed on to the backend
+         */
 	static T* Default( const QString backendName, const QString& appName ){
 
 		// __asm__("int3");
 
 		Config config( "pimaccess" );
 		config.setGroup ( backendName );
 		QString backend = config.readEntry( "usebackend" );
 
 		QAsciiDict<int> dict ( 3 );
 		dict.setAutoDelete ( TRUE );
 
 		dict.insert( "todo", new int (TODO) );
 		dict.insert( "contact", new int (CONTACT) );
                 dict.insert( "datebook", new int(DATE) );
 
 		qWarning ("TODO is: %d", TODO);
 		qWarning ("CONTACT is: %d", CONTACT);
 
                 int *find = dict[ backendName ];
                 if (!find ) return 0;
 
 		switch ( *find ){
 		case TODO:
 #ifdef __USE_SQL
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend.h b/libopie2/opiepim/backend/ocontactaccessbackend.h
index 821f5bf..ebeb42d 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend.h
+++ b/libopie2/opiepim/backend/ocontactaccessbackend.h
@@ -1,85 +1,107 @@
 /**
  * The class responsible for managing a backend.
  * The implementation of this abstract class contains
  * the complete database handling.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  * Copyright (c) 2002 by Holger Freyther (zecke@handhelds.org)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Define enum for query settings
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.5  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.4  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.3  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  * =====================================================================
  *
  */
 
 #ifndef _OCONTACTACCESSBACKEND_H_
 #define _OCONTACTACCESSBACKEND_H_
 
 #include "ocontact.h"
 #include "opimaccessbackend.h"
 
-#include "qregexp.h"
+#include <qregexp.h>
 
+/**
+ * This class represents the interface of all Contact Backends.
+ * Derivates of this class will be used to access the contacts.
+ * As implementation currently XML and vCard exist. This class needs to be implemented
+ * if you want to provide your own storage.
+ * In all queries a list of uids is passed on instead of loading the actual record!
+ *
+ * @see OContactAccessBackend_VCard
+ * @see OContactAccessBackend_XML
+ */
 class OContactAccessBackend: public OPimAccessBackend<OContact> {
  public:
 	OContactAccessBackend() {}
 	virtual ~OContactAccessBackend() {}
 
 
-	/** Return if database was changed externally.
+	/**
+         * Return if database was changed externally.
 	 * This may just make sense on file based databases like a XML-File.
 	 * It is used to prevent to overwrite the current database content
 	 * if the file was already changed by something else !
 	 * If this happens, we have to reload before save our data.
 	 * If we use real databases, this should be handled by the database
 	 * management system themselve, therefore this function should always return false in
 	 * this case. It is not our problem to handle this conflict ...
 	 * @return <i>true</i> if the database was changed and if save without reload will
 	 * be dangerous. <i>false</i> if the database was not changed or it is save to write
 	 * in this situation.
 	 */
 	virtual bool wasChangedExternally() = 0;
 
 	virtual QArray<int> matchRegexp(  const QRegExp &r ) const = 0;
 
-	/** Return all possible settings.
+	/**
+         *  Return all possible settings.
 	 *  @return All settings provided by the current backend
 	 * (i.e.: query_WildCards & query_IgnoreCase)
 	 */
 	virtual const uint querySettings() = 0;
 
-	/** Check whether settings are correct.
+	/**
+         * Check whether settings are correct.
 	 * @return <i>true</i> if the given settings are correct and possible.
 	 */
 	virtual bool hasQuerySettings (uint querySettings) const = 0;
 
-	virtual QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat ) = 0;
+        /**
+         * FIXME!!!
+         * Returns a sorted list of records either ascendinf or descending for a giving criteria and category
+         */
+        virtual QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat ) = 0;
 
 };
 #endif
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_vcard.cpp b/libopie2/opiepim/backend/ocontactaccessbackend_vcard.cpp
index f24523f..270bef3 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_vcard.cpp
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_vcard.cpp
@@ -1,43 +1,48 @@
 /*
  * VCard Backend for the OPIE-Contact Database.
  *
  * Copyright (C) 2000 Trolltech AS.  All rights reserved.
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo:
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.10  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.9  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.8  2003/02/21 16:52:49  zecke
  * -Remove old Todo classes they're deprecated and today I already using the
  * new API
  * -Guard against self assignment in OTodo
  * -Add test apps for OPIM
  * -Opiefied Event classes
  * -Added TimeZone handling and pinning of TimeZones to OEvent
  * -Adjust ORecur and the widget to better timezone behaviour
  *
  * Revision 1.7  2003/02/16 22:25:46  zecke
  * 0000276 Fix for that bug.. or better temp workaround
  * A Preferred Number is HOME|VOICE
  * A CellPhone is HOME|VOICE|CELL the type & HOME|VOICE test
  * triggers both
  * and the cell phone number overrides the other entries..
  *
@@ -55,49 +60,49 @@
  * Revision 1.5  2002/12/07 13:26:22  eilers
  * Fixing bug in storing anniversary..
  *
  * Revision 1.4  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.3  2002/11/11 16:41:09  kergoth
  * no default arguments in implementation
  *
  * Revision 1.2  2002/11/10 15:41:53  eilers
  * Bugfixes..
  *
  * Revision 1.1  2002/11/09 14:34:52  eilers
  * Added VCard Backend.
  *
  */
 #include "ocontactaccessbackend_vcard.h"
 #include "../../library/backend/vobject_p.h"
 #include "../../library/backend/qfiledirect_p.h"
 
 #include <qpe/timeconversion.h>
 
 #include <qfile.h>
 
-OContactAccessBackend_VCard::OContactAccessBackend_VCard ( QString , QString filename ):
+OContactAccessBackend_VCard::OContactAccessBackend_VCard ( const QString& , const QString& filename ):
 	m_dirty( false ),
 	m_file( filename )
 {
 	load();
 }
 
 
 bool OContactAccessBackend_VCard::load ()
 {
 	m_map.clear();
 	m_dirty = false;
 
 	VObject* obj = 0l;
 
 	if ( QFile::exists(m_file) ){
 		obj = Parse_MIME_FromFileName( QFile::encodeName(m_file).data() );
 		if ( !obj )
 			return false;
 	}else{
 		qWarning("File \"%s\" not found !", m_file.latin1() );
 		return false;
 	}
 
 	while ( obj ) {
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_vcard.h b/libopie2/opiepim/backend/ocontactaccessbackend_vcard.h
index 93e2da3..712d769 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_vcard.h
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_vcard.h
@@ -1,86 +1,96 @@
 /*
  * VCard Backend for the OPIE-Contact Database.
  *
  * Copyright (C) 2000 Trolltech AS.  All rights reserved.
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo:
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.6  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.5  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.4  2002/12/07 13:26:22  eilers
  * Fixing bug in storing anniversary..
  *
  * Revision 1.3  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.2  2002/11/10 15:41:53  eilers
  * Bugfixes..
  *
  * Revision 1.1  2002/11/09 14:34:52  eilers
  * Added VCard Backend.
  *
  */
 #ifndef __OCONTACTACCESSBACKEND_VCARD_H_
 #define __OCONTACTACCESSBACKEND_VCARD_H_
 
 #include <opie/ocontact.h>
 
 #include "ocontactaccessbackend.h"
 
 class VObject;
 
+/**
+ * This is the vCard 2.1 implementation of the Contact Storage
+ * @see OContactAccessBackend_XML
+ * @see OPimAccessBackend
+ */
 class OContactAccessBackend_VCard : public OContactAccessBackend {
  public:
-	OContactAccessBackend_VCard ( QString appname, QString filename = 0l );
+	OContactAccessBackend_VCard ( const QString& appname, const QString& filename = QString::null );
 
 	bool load ();
 	bool reload();
 	bool save();
 	void clear ();
 
 	bool add ( const OContact& newcontact );
 	bool remove ( int uid );
 	bool replace ( const OContact& contact );
-	
+
 	OContact find ( int uid ) const;
 	QArray<int> allRecords() const;
 	QArray<int> queryByExample ( const OContact &query, int settings, const QDateTime& d = QDateTime() );
 	QArray<int> matchRegexp(  const QRegExp &r ) const;
 
 	const uint querySettings();
 	bool hasQuerySettings (uint querySettings) const;
 	QArray<int> sorted( bool ascending, int sortOrder, int sortFilter, int cat );
 	bool wasChangedExternally();
-	
+
 private:
 	OContact parseVObject( VObject* obj );
 	VObject* createVObject( const OContact& c );
 	QString convDateToVCardDate( const QDate& c ) const;
 	QDate convVCardDateToDate( const QString& datestr );
 	VObject *safeAddPropValue( VObject *o, const char* prop, const QString& value );
 	VObject *safeAddProp( VObject* o, const char* prop);
-	
+
 	bool m_dirty : 1;
 	QString m_file;
 	QMap<int, OContact> m_map;
 };
 
 #endif
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp b/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
index c5a7820..661cd51 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_xml.cpp
@@ -1,43 +1,48 @@
 /*
  * XML Backend for the OPIE-Contact Database.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo: XML-Backend: Automatic reload if something was changed...
  *
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.5  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.4  2003/03/21 14:32:54  mickeyl
  * g++ compliance fix: default arguments belong into the declaration, but not the definition
  *
  * Revision 1.3  2003/03/21 12:26:28  eilers
  * Fixing small bug: If we search a birthday from today to today, it returned
  * every contact ..
  *
  * Revision 1.2  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.1.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.1.2.1  2003/02/10 15:31:38  eilers
  * Writing offsets to debug output..
  *
  * Revision 1.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
@@ -72,713 +77,713 @@
  * Revision 1.3  2002/10/14 16:21:54  eilers
  * Some minor interface updates
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  *
  */
 
 #include "ocontactaccessbackend_xml.h"
 
 #include <qasciidict.h>
 #include <qdatetime.h>
 #include <qfile.h>
 #include <qfileinfo.h>
 #include <qregexp.h>
 #include <qarray.h>
 #include <qmap.h>
-#include <qdatetime.h> 
+#include <qdatetime.h>
 
 #include <qpe/global.h>
 
 #include <opie/xmltree.h>
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <stdlib.h>
 #include <errno.h>
 
 using namespace Opie;
 
 
-OContactAccessBackend_XML::OContactAccessBackend_XML ( QString appname, QString filename ):
+OContactAccessBackend_XML::OContactAccessBackend_XML ( const QString& appname, const QString& filename ):
 	m_changed( false )
 {
 	// Just m_contactlist should call delete if an entry
 	// is removed.
 	m_contactList.setAutoDelete( true );
 	m_uidToContact.setAutoDelete( false );
 
 	m_appName = appname;
-	
+
 	/* Set journalfile name ... */
 	m_journalName = getenv("HOME");
 	m_journalName +="/.abjournal" + appname;
-	
+
 	/* Expecting to access the default filename if nothing else is set */
 	if ( filename.isEmpty() ){
 		m_fileName = Global::applicationFileName( "addressbook","addressbook.xml" );
 	} else
 		m_fileName = filename;
-	
+
 	/* Load Database now */
 	load ();
 }
 
-bool OContactAccessBackend_XML::save() 
+bool OContactAccessBackend_XML::save()
 {
-	
+
 	if ( !m_changed )
 		return true;
-	
+
 	QString strNewFile = m_fileName + ".new";
 	QFile f( strNewFile );
 	if ( !f.open( IO_WriteOnly|IO_Raw ) )
 		return false;
-	
+
 	int total_written;
 	int idx_offset = 0;
 	QString out;
 
 	// Write Header
 	out = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><!DOCTYPE Addressbook ><AddressBook>\n"
 		" <Groups>\n"
 		" </Groups>\n"
 		" <Contacts>\n";
 	QCString cstr = out.utf8();
 	f.writeBlock( cstr.data(), cstr.length() );
 	idx_offset += cstr.length();
 	out = "";
 
 	// Write all contacts
 	QListIterator<OContact> it( m_contactList );
 	for ( ; it.current(); ++it ) {
 		qWarning(" Uid %d at Offset: %x", (*it)->uid(), idx_offset );
 		out += "<Contact ";
 		(*it)->save( out );
 		out += "/>\n";
 		cstr = out.utf8();
 		total_written = f.writeBlock( cstr.data(), cstr.length() );
 		idx_offset += cstr.length();
 		if ( total_written != int(cstr.length()) ) {
 			f.close();
 			QFile::remove( strNewFile );
 			return false;
 		}
 		out = "";
 	}
 	out += " </Contacts>\n</AddressBook>\n";
-	
+
 	// Write Footer
 	cstr = out.utf8();
 	total_written = f.writeBlock( cstr.data(), cstr.length() );
 	if ( total_written != int( cstr.length() ) ) {
 		f.close();
 		QFile::remove( strNewFile );
 		return false;
 	}
 	f.close();
-	
+
 	// move the file over, I'm just going to use the system call
 	// because, I don't feel like using QDir.
 	if ( ::rename( strNewFile.latin1(), m_fileName.latin1() ) < 0 ) {
 		qWarning( "problem renaming file %s to %s, errno: %d",
 			  strNewFile.latin1(), m_journalName.latin1(), errno );
 		// remove the tmp file...
 		QFile::remove( strNewFile );
 	}
-	
+
 	/* The journalfile should be removed now... */
 	removeJournal();
-	
+
 	m_changed = false;
 	return true;
 }
 
-bool OContactAccessBackend_XML::load () 
+bool OContactAccessBackend_XML::load ()
 {
 	m_contactList.clear();
 	m_uidToContact.clear();
-	
+
 	/* Load XML-File and journal if it exists */
 	if ( !load ( m_fileName, false ) )
 		return false;
 	/* The returncode of the journalfile is ignored due to the
 	 * fact that it does not exist when this class is instantiated !
 	 * But there may such a file exist, if the application crashed.
 	 * Therefore we try to load it to get the changes before the #
 	 * crash happened...
 	 */
 	load (m_journalName, true);
-	
+
 	return true;
 }
 
-void OContactAccessBackend_XML::clear () 
+void OContactAccessBackend_XML::clear ()
 {
 	m_contactList.clear();
 	m_uidToContact.clear();
 
 	m_changed = false;
 }
 
 bool OContactAccessBackend_XML::wasChangedExternally()
 {
 	QFileInfo fi( m_fileName );
-	
+
 	QDateTime lastmod = fi.lastModified ();
-	
+
 	return (lastmod != m_readtime);
 }
 
-QArray<int> OContactAccessBackend_XML::allRecords() const 
+QArray<int> OContactAccessBackend_XML::allRecords() const
 {
 	QArray<int> uid_list( m_contactList.count() );
-	
-	uint counter = 0; 
+
+	uint counter = 0;
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		uid_list[counter++] = (*it)->uid();
 	}
-	
+
 	return ( uid_list );
 }
 
 OContact OContactAccessBackend_XML::find ( int uid ) const
 {
 	OContact foundContact; //Create empty contact
-	
+
 	OContact* found = m_uidToContact.find( QString().setNum( uid ) );
 
 	if ( found ){
 		foundContact = *found;
 	}
-	
+
 	return ( foundContact );
 }
 
-QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, int settings, 
+QArray<int> OContactAccessBackend_XML::queryByExample ( const OContact &query, int settings,
 							const QDateTime& d )
 {
-	
+
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
-	
+
 	for( ; it.current(); ++it ){
 		/* Search all fields and compare them with query object. Store them into list
 		 * if all fields matches.
 		 */
 		QDate* queryDate = 0l;
 		QDate* checkDate = 0l;
 		bool allcorrect = true;
 		for ( int i = 0; i < Qtopia::Groups; i++ ) {
 			// Birthday and anniversary are special nonstring fields and should
 			// be handled specially
 			switch ( i ){
 			case Qtopia::Birthday:
 				queryDate = new QDate( query.birthday() );
 				checkDate = new QDate( (*it)->birthday() );
 			case Qtopia::Anniversary:
 				if ( queryDate == 0l ){
 					queryDate = new QDate( query.anniversary() );
 					checkDate = new QDate( (*it)->anniversary() );
 				}
-				
+
 				if ( queryDate->isValid() ){
 					if(  checkDate->isValid() ){
 						if ( settings & OContactAccess::DateYear ){
 							if ( queryDate->year() != checkDate->year() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateMonth ){
 							if ( queryDate->month() != checkDate->month() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateDay ){
 							if ( queryDate->day() != checkDate->day() )
 								allcorrect = false;
-						} 
+						}
 						if ( settings & OContactAccess::DateDiff ) {
 							QDate current;
 							// If we get an additional date, we
 							// will take this date instead of
-							// the current one.. 
+							// the current one..
 							if ( !d.date().isValid() )
 								current = QDate::currentDate();
 							else
 								current = d.date();
 
 							// We have to equalize the year, otherwise
 							// the search will fail..
-							checkDate->setYMD( current.year(), 
-									   checkDate->month(), 
+							checkDate->setYMD( current.year(),
+									   checkDate->month(),
 									   checkDate->day() );
 							if ( *checkDate < current )
-								checkDate->setYMD( current.year()+1, 
-										   checkDate->month(), 
+								checkDate->setYMD( current.year()+1,
+										   checkDate->month(),
 										   checkDate->day() );
 
 							// Check whether the birthday/anniversary date is between
 							// the current/given date and the maximum date
 							// ( maximum time range ) !
-							qWarning("Checking if %s is between %s and %s ! ", 
+							qWarning("Checking if %s is between %s and %s ! ",
 								 checkDate->toString().latin1(),
-								 current.toString().latin1(), 
+								 current.toString().latin1(),
 								 queryDate->toString().latin1() );
 							if ( current.daysTo( *queryDate ) >= 0 ){
-								if ( !( ( *checkDate >= current ) && 
+								if ( !( ( *checkDate >= current ) &&
 									( *checkDate <= *queryDate ) ) ){
 									allcorrect = false;
 									qWarning (" Nope!..");
 								}
 							}
 						}
 					} else{
 						// checkDate is invalid. Therefore this entry is always rejected
 						allcorrect = false;
 					}
 				}
-				
+
 				delete queryDate;
 				queryDate = 0l;
 				delete checkDate;
 				checkDate = 0l;
 				break;
 			default:
 				/* Just compare fields which are not empty in the query object */
 				if ( !query.field(i).isEmpty() ){
 					switch ( settings & ~( OContactAccess::IgnoreCase
 							       | OContactAccess::DateDiff
 							       | OContactAccess::DateYear
 							       | OContactAccess::DateMonth
 							       | OContactAccess::DateDay
-							       | OContactAccess::MatchOne 
+							       | OContactAccess::MatchOne
 							       ) ){
-						
+
 					case OContactAccess::RegExp:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       false );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::WildCards:{
 						QRegExp expr ( query.field(i),
 							       !(settings & OContactAccess::IgnoreCase),
 							       true );
 						if ( expr.find ( (*it)->field(i), 0 ) == -1 )
 							allcorrect = false;
 					}
 						break;
 					case OContactAccess::ExactMatch:{
 						if (settings & OContactAccess::IgnoreCase){
 							if ( query.field(i).upper() !=
 							     (*it)->field(i).upper() )
 								allcorrect = false;
 						}else{
 							if ( query.field(i) != (*it)->field(i) )
 								allcorrect = false;
 						}
 					}
 						break;
 					}
 				}
 			}
 		}
 		if ( allcorrect ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
 	}
-	
+
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
-	
+
 	return m_currentQuery;
 }
 
 QArray<int> OContactAccessBackend_XML::matchRegexp(  const QRegExp &r ) const
 {
 	QArray<int> m_currentQuery( m_contactList.count() );
 	QListIterator<OContact> it( m_contactList );
 	uint arraycounter = 0;
-	
+
 	for( ; it.current(); ++it ){
 		if ( (*it)->match( r ) ){
 			m_currentQuery[arraycounter++] = (*it)->uid();
 		}
-		
+
 	}
 	// Shrink to fit..
 	m_currentQuery.resize(arraycounter);
-	
+
 	return m_currentQuery;
 }
 
 const uint OContactAccessBackend_XML::querySettings()
 {
 	return ( OContactAccess::WildCards
 		 | OContactAccess::IgnoreCase
 		 | OContactAccess::RegExp
-		 | OContactAccess::ExactMatch 
+		 | OContactAccess::ExactMatch
 		 | OContactAccess::DateDiff
 		 | OContactAccess::DateYear
 		 | OContactAccess::DateMonth
 		 | OContactAccess::DateDay
 		 );
 }
 
 bool OContactAccessBackend_XML::hasQuerySettings (uint querySettings) const
 {
-	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay 
+	/* OContactAccess::IgnoreCase, DateDiff, DateYear, DateMonth, DateDay
 	 * may be added with any of the other settings. IgnoreCase should never used alone.
 	 * Wildcards, RegExp, ExactMatch should never used at the same time...
 	 */
-	
-	if ( querySettings == OContactAccess::IgnoreCase ) 
+
+	if ( querySettings == OContactAccess::IgnoreCase )
 		return false;
-	
+
 	switch ( querySettings & ~( OContactAccess::IgnoreCase
 				    | OContactAccess::DateDiff
 				    | OContactAccess::DateYear
 				    | OContactAccess::DateMonth
 				    | OContactAccess::DateDay
-				    ) 
+				    )
 		 ){
 	case OContactAccess::RegExp:
 		return ( true );
 	case OContactAccess::WildCards:
 		return ( true );
 	case OContactAccess::ExactMatch:
 		return ( true );
 	default:
 		return ( false );
 	}
 }
 
-// Currently only asc implemented.. 
-QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int ) 
+// Currently only asc implemented..
+QArray<int> OContactAccessBackend_XML::sorted( bool asc,  int , int ,  int )
 {
 	QMap<QString, int> nameToUid;
 	QStringList names;
 	QArray<int> m_currentQuery( m_contactList.count() );
-	
-	// First fill map and StringList with all Names 
+
+	// First fill map and StringList with all Names
 	// Afterwards sort namelist and use map to fill array to return..
 	QListIterator<OContact> it( m_contactList );
 	for( ; it.current(); ++it ){
 		names.append( (*it)->fileAs() + QString::number( (*it)->uid() ) );
 		nameToUid.insert( (*it)->fileAs() + QString::number( (*it)->uid() ), (*it)->uid() );
 	}
 	names.sort();
-	
+
 	int i = 0;
 	if ( asc ){
 		for ( QStringList::Iterator it = names.begin(); it != names.end(); ++it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}else{
 		for ( QStringList::Iterator it = names.end(); it != names.begin(); --it )
 			m_currentQuery[i++] = nameToUid[ (*it) ];
 	}
-	
+
 	return m_currentQuery;
-	
+
 }
 
 bool OContactAccessBackend_XML::add ( const OContact &newcontact )
 {
 	//qWarning("odefaultbackend: ACTION::ADD");
 	updateJournal (newcontact, ACTION_ADD);
 	addContact_p( newcontact );
-	
+
 	m_changed = true;
-	
+
 	return true;
 }
 
 bool OContactAccessBackend_XML::replace ( const OContact &contact )
 {
 	m_changed = true;
-	
+
 	OContact* found = m_uidToContact.find ( QString().setNum( contact.uid() ) );
 
 	if ( found ) {
 		OContact* newCont = new OContact( contact );
 
 		updateJournal ( *newCont, ACTION_REPLACE);
 		m_contactList.removeRef ( found );
 		m_contactList.append ( newCont );
 		m_uidToContact.remove( QString().setNum( contact.uid() ) );
 		m_uidToContact.insert( QString().setNum( newCont->uid() ), newCont );
 
 		qWarning("Nur zur Sicherheit: %d == %d ?",contact.uid(), newCont->uid());
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::remove ( int uid )
 {
 	m_changed = true;
-	
+
 	OContact* found = m_uidToContact.find ( QString().setNum( uid ) );
 
 	if ( found ) {
 		updateJournal ( *found, ACTION_REMOVE);
 		m_contactList.removeRef ( found );
 		m_uidToContact.remove( QString().setNum( uid ) );
 
 		return true;
 	} else
 		return false;
 }
 
 bool OContactAccessBackend_XML::reload(){
 	/* Reload is the same as load in this implementation */
 	return ( load() );
 }
 
 void OContactAccessBackend_XML::addContact_p( const OContact &newcontact )
 {
 	OContact* contRef = new OContact( newcontact );
 
 	m_contactList.append ( contRef );
 	m_uidToContact.insert( QString().setNum( newcontact.uid() ), contRef );
 }
 
 /* This function loads the xml-database and the journalfile */
-bool OContactAccessBackend_XML::load( const QString filename, bool isJournal ) 
+bool OContactAccessBackend_XML::load( const QString filename, bool isJournal )
 {
-	
+
 	/* We use the time of the last read to check if the file was
 	 * changed externally.
 	 */
 	if ( !isJournal ){
 		QFileInfo fi( filename );
 		m_readtime = fi.lastModified ();
 	}
-	
+
 	const int JOURNALACTION = Qtopia::Notes + 1;
 	const int JOURNALROW = JOURNALACTION + 1;
-	
+
 	bool foundAction = false;
 	journal_action action = ACTION_ADD;
 	int journalKey = 0;
 	QMap<int, QString> contactMap;
 	QMap<QString, QString> customMap;
 	QMap<QString, QString>::Iterator customIt;
 	QAsciiDict<int> dict( 47 );
-	
+
 	dict.setAutoDelete( TRUE );
 	dict.insert( "Uid", new int(Qtopia::AddressUid) );
 	dict.insert( "Title", new int(Qtopia::Title) );
 	dict.insert( "FirstName", new int(Qtopia::FirstName) );
 	dict.insert( "MiddleName", new int(Qtopia::MiddleName) );
 	dict.insert( "LastName", new int(Qtopia::LastName) );
 	dict.insert( "Suffix", new int(Qtopia::Suffix) );
 	dict.insert( "FileAs", new int(Qtopia::FileAs) );
 	dict.insert( "Categories", new int(Qtopia::AddressCategory) );
 	dict.insert( "DefaultEmail", new int(Qtopia::DefaultEmail) );
 	dict.insert( "Emails", new int(Qtopia::Emails) );
 	dict.insert( "HomeStreet", new int(Qtopia::HomeStreet) );
 	dict.insert( "HomeCity", new int(Qtopia::HomeCity) );
 	dict.insert( "HomeState", new int(Qtopia::HomeState) );
 	dict.insert( "HomeZip", new int(Qtopia::HomeZip) );
 	dict.insert( "HomeCountry", new int(Qtopia::HomeCountry) );
 	dict.insert( "HomePhone", new int(Qtopia::HomePhone) );
 	dict.insert( "HomeFax", new int(Qtopia::HomeFax) );
 	dict.insert( "HomeMobile", new int(Qtopia::HomeMobile) );
 	dict.insert( "HomeWebPage", new int(Qtopia::HomeWebPage) );
 	dict.insert( "Company", new int(Qtopia::Company) );
 	dict.insert( "BusinessStreet", new int(Qtopia::BusinessStreet) );
 	dict.insert( "BusinessCity", new int(Qtopia::BusinessCity) );
 	dict.insert( "BusinessState", new int(Qtopia::BusinessState) );
 	dict.insert( "BusinessZip", new int(Qtopia::BusinessZip) );
 	dict.insert( "BusinessCountry", new int(Qtopia::BusinessCountry) );
 	dict.insert( "BusinessWebPage", new int(Qtopia::BusinessWebPage) );
 	dict.insert( "JobTitle", new int(Qtopia::JobTitle) );
 	dict.insert( "Department", new int(Qtopia::Department) );
 	dict.insert( "Office", new int(Qtopia::Office) );
 	dict.insert( "BusinessPhone", new int(Qtopia::BusinessPhone) );
 	dict.insert( "BusinessFax", new int(Qtopia::BusinessFax) );
 	dict.insert( "BusinessMobile", new int(Qtopia::BusinessMobile) );
 	dict.insert( "BusinessPager", new int(Qtopia::BusinessPager) );
 	dict.insert( "Profession", new int(Qtopia::Profession) );
 	dict.insert( "Assistant", new int(Qtopia::Assistant) );
 	dict.insert( "Manager", new int(Qtopia::Manager) );
 	dict.insert( "Spouse", new int(Qtopia::Spouse) );
 	dict.insert( "Children", new int(Qtopia::Children) );
 	dict.insert( "Gender", new int(Qtopia::Gender) );
 	dict.insert( "Birthday", new int(Qtopia::Birthday) );
 	dict.insert( "Anniversary", new int(Qtopia::Anniversary) );
 	dict.insert( "Nickname", new int(Qtopia::Nickname) );
 	dict.insert( "Notes", new int(Qtopia::Notes) );
 	dict.insert( "action", new int(JOURNALACTION) );
 	dict.insert( "actionrow", new int(JOURNALROW) );
-	
+
 	//qWarning( "OContactDefaultBackEnd::loading %s", filename.latin1() );
-	
+
 	XMLElement *root = XMLElement::load( filename );
 	if(root != 0l ){ // start parsing
 		/* Parse all XML-Elements and put the data into the
 		 * Contact-Class
 		 */
 		XMLElement *element = root->firstChild();
 		//qWarning("OContactAccess::load tagName(): %s", root->tagName().latin1() );
 		element = element->firstChild();
-		
+
 		/* Search Tag "Contacts" which is the parent of all Contacts */
 		while( element && !isJournal ){
 			if( element->tagName() != QString::fromLatin1("Contacts") ){
 				//qWarning ("OContactDefBack::Searching for Tag \"Contacts\"! Found: %s",
 				//	  element->tagName().latin1());
 				element = element->nextChild();
 			} else {
 				element = element->firstChild();
 				break;
 			}
 		}
 		/* Parse all Contacts and ignore unknown tags */
 		while( element ){
 			if( element->tagName() != QString::fromLatin1("Contact") ){
 				//qWarning ("OContactDefBack::Searching for Tag \"Contact\"! Found: %s",
 				//	  element->tagName().latin1());
 				element = element->nextChild();
 				continue;
 			}
 			/* Found alement with tagname "contact", now parse and store all
 			 * attributes contained
 			 */
 			//qWarning("OContactDefBack::load element tagName() : %s",
 			//	 element->tagName().latin1() );
 			QString dummy;
 			foundAction = false;
-			
+
 			XMLElement::AttributeMap aMap = element->attributes();
 			XMLElement::AttributeMap::Iterator it;
 			contactMap.clear();
 			customMap.clear();
 			for( it = aMap.begin(); it != aMap.end(); ++it ){
 				// qWarning ("Read Attribute: %s=%s", it.key().latin1(),it.data().latin1());
-				
+
 				int *find = dict[ it.key() ];
 				/* Unknown attributes will be stored as "Custom" elements */
 				if ( !find ) {
 					qWarning("Attribute %s not known.", it.key().latin1());
 					//contact.setCustomField(it.key(), it.data());
 					customMap.insert( it.key(),  it.data() );
 					continue;
 				}
-				
+
 				/* Check if special conversion is needed and add attribute
 				 * into Contact class
 				 */
 				switch( *find ) {
 					/*
 					  case Qtopia::AddressUid:
 					  contact.setUid( it.data().toInt() );
 					  break;
 					  case Qtopia::AddressCategory:
 					  contact.setCategories( Qtopia::Record::idsFromString( it.data( )));
 					  break;
 					*/
 				case JOURNALACTION:
 					action = journal_action(it.data().toInt());
 					foundAction = true;
 					qWarning ("ODefBack(journal)::ACTION found: %d", action);
 					break;
 				case JOURNALROW:
 					journalKey = it.data().toInt();
 					break;
 				default: // no conversion needed add them to the map
 					contactMap.insert( *find, it.data() );
 					break;
 				}
 			}
 			/* now generate the Contact contact */
 			OContact contact( contactMap );
-			
+
 			for (customIt = customMap.begin(); customIt != customMap.end(); ++customIt ) {
 				contact.setCustomField( customIt.key(),  customIt.data() );
 			}
-			
+
 			if (foundAction){
 				foundAction = false;
 				switch ( action ) {
 				case ACTION_ADD:
 					addContact_p (contact);
 					break;
 				case ACTION_REMOVE:
 					if ( !remove (contact.uid()) )
 						qWarning ("ODefBack(journal)::Unable to remove uid: %d",
 							  contact.uid() );
 					break;
 				case ACTION_REPLACE:
 					if ( !replace ( contact ) )
 						qWarning ("ODefBack(journal)::Unable to replace uid: %d",
 							  contact.uid() );
 					break;
 				default:
 					qWarning ("Unknown action: ignored !");
 					break;
 				}
 			}else{
 				/* Add contact to list */
 				addContact_p (contact);
 			}
-			
+
 			/* Move to next element */
 			element = element->nextChild();
 		}
 	}else {
 		qWarning("ODefBack::could not load");
 	}
 	delete root;
 	qWarning("returning from loading" );
 	return true;
 }
 
 
 void OContactAccessBackend_XML::updateJournal( const OContact& cnt,
-					       journal_action action ) 
+					       journal_action action )
 {
 	QFile f( m_journalName );
 	bool created = !f.exists();
 	if ( !f.open(IO_WriteOnly|IO_Append) )
 		return;
-	
+
 	QString buf;
 	QCString str;
-	
+
 	// if the file was created, we have to set the Tag "<CONTACTS>" to
 	// get a XML-File which is readable by our parser.
 	// This is just a cheat, but better than rewrite the parser.
 	if ( created ){
 		buf = "<Contacts>";
 		QCString cstr = buf.utf8();
 		f.writeBlock( cstr.data(), cstr.length() );
 	}
-	
+
 	buf = "<Contact ";
 	cnt.save( buf );
 	buf += " action=\"" + QString::number( (int)action ) + "\" ";
 	buf += "/>\n";
 	QCString cstr = buf.utf8();
 	f.writeBlock( cstr.data(), cstr.length() );
 }
 
 void OContactAccessBackend_XML::removeJournal()
 {
 	QFile f ( m_journalName );
 	if ( f.exists() )
 		f.remove();
 }
 
diff --git a/libopie2/opiepim/backend/ocontactaccessbackend_xml.h b/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
index 4d6a7ef..7b5365b 100644
--- a/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
+++ b/libopie2/opiepim/backend/ocontactaccessbackend_xml.h
@@ -1,43 +1,48 @@
 /*
  * XML Backend for the OPIE-Contact Database.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation; either
  *      version 2 of the License, or (at your option) any later version.
  * =====================================================================
  * ToDo: XML-Backend: Automatic reload if something was changed...
  *
  *
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.14  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.13  2003/03/21 10:33:09  eilers
  * Merged speed optimized xml backend for contacts to main.
  * Added QDateTime to querybyexample. For instance, it is now possible to get
  * all Birthdays/Anniversaries between two dates. This should be used
  * to show all birthdays in the datebook..
  * This change is sourcecode backward compatible but you have to upgrade
  * the binaries for today-addressbook.
  *
  * Revision 1.12.2.2  2003/02/11 12:17:28  eilers
  * Speed optimization. Removed the sequential search loops.
  *
  * Revision 1.12.2.1  2003/02/09 15:05:01  eilers
  * Nothing happened.. Just some cleanup before I will start..
  *
  * Revision 1.12  2003/01/03 16:58:03  eilers
  * Reenable debug output
  *
  * Revision 1.11  2003/01/03 12:31:28  eilers
  * Bugfix for calculating data diffs..
  *
  * Revision 1.10  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
@@ -63,82 +68,87 @@
  * Some minor interface updates
  *
  * Revision 1.2  2002/10/07 17:34:24  eilers
  * added OBackendFactory for advanced backend access
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  *
  */
 
 #ifndef _OContactAccessBackend_XML_
 #define _OContactAccessBackend_XML_
 
 #include "ocontactaccessbackend.h"
 #include "ocontactaccess.h"
 
 #include <qlist.h>
 #include <qdict.h>
 
 /* the default xml implementation */
+/**
+ * This class is the XML implementation of a Contact backend
+ * it does implement everything available for OContact.
+ * @see OPimAccessBackend for more information of available methods
+ */
 class OContactAccessBackend_XML : public OContactAccessBackend {
  public:
-	OContactAccessBackend_XML ( QString appname, QString filename = 0l );
-	
+	OContactAccessBackend_XML ( const QString& appname, const QString& filename = QString::null );
+
 	bool save();
-	
+
 	bool load ();
 
 	void clear ();
-	
+
 	bool wasChangedExternally();
-	
+
 	QArray<int> allRecords() const;
-	
+
 	OContact find ( int uid ) const;
-	
+
 	QArray<int> queryByExample ( const OContact &query, int settings, const QDateTime& d = QDateTime() );
 
 	QArray<int> matchRegexp(  const QRegExp &r ) const;
-	
+
 	const uint querySettings();
-	
+
 	bool hasQuerySettings (uint querySettings) const;
-	
-	// Currently only asc implemented.. 
+
+	// Currently only asc implemented..
 	QArray<int> sorted( bool asc,  int , int ,  int );
 	bool add ( const OContact &newcontact );
-	
+
 	bool replace ( const OContact &contact );
-	
+
 	bool remove ( int uid );
 	bool reload();
-	
+
  private:
 
 	enum journal_action { ACTION_ADD, ACTION_REMOVE, ACTION_REPLACE };
 
 	void addContact_p( const OContact &newcontact );
-	
+
 	/* This function loads the xml-database and the journalfile */
 	bool load( const QString filename, bool isJournal );
-	
-	
+
+
 	void updateJournal( const OContact& cnt, journal_action action );
 	void removeJournal();
-	
+
  protected:
 	bool m_changed;
 	QString m_journalName;
 	QString m_fileName;
 	QString m_appName;
 	QList<OContact> m_contactList;
 	QDateTime m_readtime;
 
 	QDict<OContact> m_uidToContact;
 };
 
 #endif
diff --git a/libopie2/opiepim/backend/odatebookaccessbackend.h b/libopie2/opiepim/backend/odatebookaccessbackend.h
index eb6e8fb..86ff298 100644
--- a/libopie2/opiepim/backend/odatebookaccessbackend.h
+++ b/libopie2/opiepim/backend/odatebookaccessbackend.h
@@ -1,32 +1,73 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_BACKEND_H
 #define OPIE_DATE_BOOK_ACCESS_BACKEND_H
 
 #include <qarray.h>
 
 #include "opimaccessbackend.h"
 #include "oevent.h"
 
+/**
+ * This class is the interface to the storage of Events.
+ * @see OPimAccessBackend
+ *
+ */
 class ODateBookAccessBackend : public OPimAccessBackend<OEvent> {
 public:
     typedef int UID;
+
+    /**
+     * c'tor without parameter
+     */
     ODateBookAccessBackend();
     ~ODateBookAccessBackend();
 
+    /**
+     * This method should return a list of UIDs containing
+     * all events. No filter should be applied
+     * @return list of events
+     */
     virtual QArray<UID> rawEvents()const = 0;
+
+    /**
+     * This method should return a list of UIDs containing
+     * all repeating events. No filter should be applied
+     * @return list of repeating events
+     */
     virtual QArray<UID> rawRepeats()const = 0;
+
+    /**
+     * This mthod should return a list of UIDs containing all non
+     * repeating events. No filter should be applied
+     * @return list of nonrepeating events
+     */
     virtual QArray<UID> nonRepeats() const = 0;
 
     /**
-     * these two methods are used if you do not implement
-     * effectiveEvents...
+     * If you do not want to implement the effectiveEvents methods below
+     * you need to supply it with directNonRepeats.
+     * This method can return empty lists if effectiveEvents is implememted
      */
     virtual OEvent::ValueList directNonRepeats() = 0;
+
+    /**
+     * Same as above but return raw repeats!
+     */
     virtual OEvent::ValueList directRawRepeats() = 0;
 
     /* is implemented by default but you can reimplement it*/
+    /**
+     * Effective Events are special event occuring during a time frame. This method does calcualte
+     * EffectiveEvents bases on the directNonRepeats and directRawRepeats. You may implement this method
+     * yourself
+     */
     virtual OEffectiveEvent::ValueList effecticeEvents( const QDate& from, const QDate& to );
+
+    /**
+     * this is an overloaded member function
+     * @see effecticeEvents
+     */
     virtual OEffectiveEvent::ValueList effecticeEvents( const QDateTime& start );
 
 };
 
 #endif
diff --git a/libopie2/opiepim/backend/odatebookaccessbackend_xml.h b/libopie2/opiepim/backend/odatebookaccessbackend_xml.h
index 563c31f..7848f7c 100644
--- a/libopie2/opiepim/backend/odatebookaccessbackend_xml.h
+++ b/libopie2/opiepim/backend/odatebookaccessbackend_xml.h
@@ -1,31 +1,37 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_BACKEND_XML__H
 #define OPIE_DATE_BOOK_ACCESS_BACKEND_XML__H
 
 #include <qmap.h>
 
 #include "odatebookaccessbackend.h"
 
+/**
+ * This is the default XML implementation for DateBoook XML storage
+ * It fully implements the interface
+ * @see ODateBookAccessBackend
+ * @see OPimAccessBackend
+ */
 class ODateBookAccessBackend_XML : public ODateBookAccessBackend {
 public:
     ODateBookAccessBackend_XML( const QString& appName,
                                 const QString& fileName = QString::null);
     ~ODateBookAccessBackend_XML();
 
     bool load();
     bool reload();
     bool save();
 
     QArray<int> allRecords()const;
     QArray<int> queryByExample( const OEvent&, int, const QDateTime& d = QDateTime() );
     OEvent find( int uid )const;
     void clear();
     bool add( const OEvent& ev );
     bool remove( int uid );
     bool replace( const OEvent& ev );
 
     QArray<UID> rawEvents()const;
     QArray<UID> rawRepeats()const;
     QArray<UID> nonRepeats()const;
 
     OEvent::ValueList directNonRepeats();
     OEvent::ValueList directRawRepeats();
diff --git a/libopie2/opiepim/core/ocontactaccess.h b/libopie2/opiepim/core/ocontactaccess.h
index 32b2dcb..d7ceaf2 100644
--- a/libopie2/opiepim/core/ocontactaccess.h
+++ b/libopie2/opiepim/core/ocontactaccess.h
@@ -1,126 +1,136 @@
 /*
  * Class to manage the Contacts.
  *
  * Copyright (c) 2002 by Stefan Eilers (Eilers.Stefan@epost.de)
  * Copyright (c) 2002 by Holger Freyther (zecke@handhelds.org)
  *
  * =====================================================================
  *	This program is free software; you can redistribute it and/or
  *	modify it under the terms of the GNU Library General Public
  *      License as published by the Free Software Foundation;
  *      either version 2 of the License, or (at your option) any later
  *      version.
  * =====================================================================
  * ToDo: Define enum for query settings
  * =====================================================================
  * Version: $Id$
  * =====================================================================
  * History:
  * $Log$
+ * Revision 1.7  2003/04/13 18:07:10  zecke
+ * More API doc
+ * QString -> const QString&
+ * QString = 0l -> QString::null
+ *
  * Revision 1.6  2003/01/02 14:27:12  eilers
  * Improved query by example: Search by date is possible.. First step
  * for a today plugin for birthdays..
  *
  * Revision 1.5  2002/11/13 14:14:51  eilers
  * Added sorted for Contacts..
  *
  * Revision 1.4  2002/11/01 15:10:42  eilers
  * Added regExp-search in database for all fields in a contact.
  *
  * Revision 1.3  2002/10/16 10:52:40  eilers
  * Added some docu to the interface and now using the cache infrastucture by zecke.. :)
  *
  * Revision 1.2  2002/10/14 16:21:54  eilers
  * Some minor interface updates
  *
  * Revision 1.1  2002/09/27 17:11:44  eilers
  * Added API for accessing the Contact-Database ! It is compiling, but
  * please do not expect that anything is working !
  * I will debug that stuff in the next time ..
  * Please read README_COMPILE for compiling !
  *
  * =====================================================================
  */
 #ifndef _OCONTACTACCESS_H
 #define _OCONTACTACCESS_H
 
 #include <qobject.h>
 
 #include <qpe/qcopenvelope_qws.h>
 
 #include <qvaluelist.h>
 #include <qfileinfo.h>
 
 #include "ocontact.h"
 #include "ocontactaccessbackend.h"
 #include "opimaccesstemplate.h"
 
-/** Class to access the contacts database.
+/**
+ * Class to access the contacts database.
  * This is just a frontend for the real database handling which is
  * done by the backend.
+ * This class is used to access the Contacts on a system. This class as any OPIE PIM
+ * class is backend independent.
+
  * @see OPimAccessTemplate
  */
 class OContactAccess: public QObject, public OPimAccessTemplate<OContact>
 {
     Q_OBJECT
 
  public:
-	/** Create Database with contacts (addressbook).
+	/**
+         * Create Database with contacts (addressbook).
 	 * @param appname Name of application which wants access to the database
 	 * (i.e. "todolist")
 	 * @param filename The name of the database file. If not set, the default one
 	 * is used.
 	 * @param backend Pointer to an alternative Backend. If not set, we will use
 	 * the default backend.
 	 * @param handlesync If <b>true</b> the database stores the current state
 	 * automatically if it receives the signals <i>flush()</i> and <i>reload()</i>
 	 * which are used before and after synchronisation. If the application wants
 	 * to react itself, it should be disabled by setting it to <b>false</b>
 	 * @see OContactAccessBackend
 	 */
 	OContactAccess (const QString appname, const QString filename = 0l,
                     OContactAccessBackend* backend = 0l, bool handlesync = true);
 	~OContactAccess ();
 
 	/** Constants for query.
 	 * Use this constants to set the query parameters.
 	 * Note: <i>query_IgnoreCase</i> just make sense with one of the other attributes !
 	 * @see queryByExample()
 	 */
 	enum QuerySettings {
 		WildCards  = 0x0001,
 		IgnoreCase = 0x0002,
 		RegExp     = 0x0004,
 		ExactMatch = 0x0008,
 		MatchOne   = 0x0010, // Only one Entry must match
 		DateDiff   = 0x0020, // Find all entries from today until given date
 		DateYear   = 0x0040, // The year matches
 		DateMonth  = 0x0080, // The month matches
 		DateDay    = 0x0100, // The day matches
 	};
 
-	
+
 	ORecordList<OContact> matchRegexp(  const QRegExp &r )const;
 
 	/** Return all Contacts in a sorted manner.
 	 *  @param ascending true: Sorted in acending order.
 	 *  @param sortOrder Currently not implemented. Just defined to stay compatible to otodoaccess
 	 *  @param sortFilter Currently not implemented. Just defined to stay compatible to otodoaccess
 	 *  @param cat Currently not implemented. Just defined to stay compatible to otodoaccess
 	 */
 	List sorted( bool ascending, int sortOrder, int sortFilter, int cat ) const;
 
 	/** Return all possible settings.
 	 *  @return All settings provided by the current backend
 	 * (i.e.: query_WildCards & query_IgnoreCase)
 	 */
 	const uint querySettings();
 
 	/** Check whether settings are correct.
 	 * @return <i>true</i> if the given settings are correct and possible.
 	 */
 	bool hasQuerySettings ( int querySettings ) const;
 
 	/**
 	 * if the resource was changed externally.
 	 * You should use the signal instead of polling possible changes !
diff --git a/libopie2/opiepim/core/odatebookaccess.cpp b/libopie2/opiepim/core/odatebookaccess.cpp
index 08e61ff..a3661a3 100644
--- a/libopie2/opiepim/core/odatebookaccess.cpp
+++ b/libopie2/opiepim/core/odatebookaccess.cpp
@@ -1,38 +1,66 @@
 #include "obackendfactory.h"
 #include "odatebookaccess.h"
 
+/**
+ * Simple constructor
+ * It takes a ODateBookAccessBackend as parent. If it is 0 the default implementation
+ * will be used!
+ * @param back The backend to be used or 0 for the default backend
+ * @param ac What kind of access is intended
+ */
 ODateBookAccess::ODateBookAccess( ODateBookAccessBackend* back, enum Access ac )
     : OPimAccessTemplate<OEvent>( back )
 {
     if (!back )
         back = OBackendFactory<ODateBookAccessBackend>::Default("datebook", QString::null );
 
     m_backEnd = back;
     setBackEnd( m_backEnd );
 }
 ODateBookAccess::~ODateBookAccess() {
 }
+
+/**
+ * @return all events available
+ */
 ODateBookAccess::List ODateBookAccess::rawEvents()const {
     QArray<int> ints = m_backEnd->rawEvents();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return all repeating events
+ */
 ODateBookAccess::List ODateBookAccess::rawRepeats()const {
     QArray<int> ints = m_backEnd->rawRepeats();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return all non repeating events
+ */
 ODateBookAccess::List ODateBookAccess::nonRepeats()const {
     QArray<int> ints = m_backEnd->nonRepeats();
 
     List lis( ints, this );
     return lis;
 }
+
+/**
+ * @return dates in the time span between from and to
+ * @param from Include all events from...
+ * @param to Include all events to...
+ */
 OEffectiveEvent::ValueList ODateBookAccess::effectiveEvents( const QDate& from, const QDate& to ) {
     return m_backEnd->effecticeEvents( from, to );
 }
+/**
+ * @return all events at a given datetime
+ */
 OEffectiveEvent::ValueList ODateBookAccess::effectiveEvents( const QDateTime& start ) {
     return m_backEnd->effecticeEvents( start );
 }
diff --git a/libopie2/opiepim/core/odatebookaccess.h b/libopie2/opiepim/core/odatebookaccess.h
index 7047039..7c7a63f 100644
--- a/libopie2/opiepim/core/odatebookaccess.h
+++ b/libopie2/opiepim/core/odatebookaccess.h
@@ -1,32 +1,41 @@
 #ifndef OPIE_DATE_BOOK_ACCESS_H
 #define OPIE_DATE_BOOK_ACCESS_H
 
 #include "odatebookaccessbackend.h"
 #include "opimaccesstemplate.h"
 
 #include "oevent.h"
 
+/**
+ * This is the object orientated datebook database. It'll use OBackendFactory
+ * to query for a backend.
+ * All access to the datebook should be done via this class.
+ * Make sure to load and save the datebook this is not part of
+ * destructing and creating the object
+ *
+ * @author Holger Freyther
+ */
 class ODateBookAccess : public OPimAccessTemplate<OEvent> {
 public:
     ODateBookAccess( ODateBookAccessBackend* = 0l, enum Access acc = Random );
     ~ODateBookAccess();
 
-    /** return all events */
+    /* return all events */
     List rawEvents()const;
 
-    /** return repeating events */
+    /* return repeating events */
     List rawRepeats()const;
 
-    /** return non repeating events */
+    /* return non repeating events */
     List nonRepeats()const;
 
     OEffectiveEvent::ValueList effectiveEvents( const QDate& from, const QDate& to );
     OEffectiveEvent::ValueList effectiveEvents( const QDateTime& start );
 
 private:
     ODateBookAccessBackend* m_backEnd;
     class Private;
     Private* d;
 };
 
 #endif
diff --git a/libopie2/opiepim/ocontact.h b/libopie2/opiepim/ocontact.h
index 1fd1c75..25fa0e7 100644
--- a/libopie2/opiepim/ocontact.h
+++ b/libopie2/opiepim/ocontact.h
@@ -13,50 +13,57 @@
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #ifndef __OCONTACT_H__
 #define __OCONTACT_H__
 
 #include <opie/opimrecord.h>
 #include <qpe/recordfields.h>
 
 #include <qdatetime.h>
 #include <qstringlist.h>
 
 #if defined(QPC_TEMPLATEDLL)
 // MOC_SKIP_BEGIN
 QPC_TEMPLATEEXTERN template class QPC_EXPORT QMap<int, QString>;
 // MOC_SKIP_END
 #endif
 
-class ContactPrivate; 
-
+class ContactPrivate;
+
+/**
+ * OContact class represents a specialised PIM Record for contacts.
+ * It does store all kind of persopn related information.
+ *
+ * @short Contact Container
+ * @author TT, Stefan Eiler, Holger Freyther
+ */
 class QPC_EXPORT OContact : public OPimRecord
 {
     friend class DataSet;
 public:
     OContact();
     OContact( const QMap<int, QString> &fromMap );
     virtual ~OContact();
 
     /*
      * do we need to inline them
      * if yes do we need to inline them this way?
      * -zecke
      */
     void setTitle( const QString &v ) { replace( Qtopia::Title, v ); }
     void setFirstName( const QString &v ) { replace( Qtopia::FirstName, v ); }
     void setMiddleName( const QString &v ) { replace( Qtopia::MiddleName, v ); }
     void setLastName( const QString &v ) { replace( Qtopia::LastName, v ); }
     void setSuffix( const QString &v ) { replace( Qtopia::Suffix, v ); }
     void setFileAs( const QString &v ) { replace( Qtopia::FileAs, v ); }
     void setFileAs();
 
     // default email address
     void setDefaultEmail( const QString &v );
     // inserts email to list and ensure's doesn't already exist
diff --git a/libopie2/opiepim/oevent.h b/libopie2/opiepim/oevent.h
index 585515c..57d32d0 100644
--- a/libopie2/opiepim/oevent.h
+++ b/libopie2/opiepim/oevent.h
@@ -9,68 +9,84 @@
 
 #include <qpe/recordfields.h>
 #include <qpe/palmtopuidgen.h>
 
 #include "otimezone.h"
 #include "opimrecord.h"
 
 struct OCalendarHelper {
     /** calculate the week number of the date */
     static int week( const QDate& );
     /** calculate the occurence of week days since the start of the month */
     static int ocurrence( const QDate& );
 
     // returns the dayOfWeek for the *first* day it finds (ignores
     // any further days!). Returns 1 (Monday) if there isn't any day found
     static int dayOfWeek( char day );
 
     /** returns the diff of month */
     static int monthDiff( const QDate& first, const QDate& second );
 
 };
 
 class OPimNotifyManager;
 class ORecur;
+
+/**
+ * This is the container for all Events. It encapsules all
+ * available information for a single Event
+ * @short container for events.
+ */
 class OEvent : public OPimRecord {
 public:
     typedef QValueList<OEvent> ValueList;
+    /**
+     * RecordFields contain possible attributes
+     */
     enum RecordFields {
         Uid = Qtopia::UID_ID,
         Category = Qtopia::CATEGORY_ID,
         Description,
         Location,
         Alarm,
         Reminder,
         Recurrence,
         Note,
         Created,
         StartDate,
         EndDate,
         AllDay,
         TimeZone
     };
 
+    /**
+     * Start with an Empty OEvent. UID == 0 means that it is empty
+     */
     OEvent(int uid = 0);
+
+    /**
+     * copy c'tor
+     */
     OEvent( const OEvent& );
     ~OEvent();
     OEvent &operator=( const OEvent& );
 
     QString description()const;
     void setDescription( const QString& description );
 
     QString location()const;
     void setLocation( const QString& loc );
 
     bool hasNotifiers()const;
     OPimNotifyManager &notifiers()const;
 
     ORecur recurrence()const;
     void setRecurrence( const ORecur& );
     bool hasRecurrence()const;
 
     QString note()const;
     void setNote( const QString& note );
 
 
     QDateTime createdDateTime()const;
     void setCreatedDateTime( const QDateTime& dt);
 
@@ -123,49 +139,48 @@ public:
 
     bool loadFromStream( QDataStream& );
     bool saveToStream( QDataStream& )const;
 
 /*    bool operator==( const OEvent& );
     bool operator!=( const OEvent& );
     bool operator<( const OEvent& );
     bool operator<=( const OEvent& );
     bool operator>( const OEvent& );
     bool operator>=(const OEvent& );
 */
 private:
     inline void changeOrModify();
     void deref();
     struct Data;
     Data* data;
     class Private;
     Private* priv;
 
 };
 
 /**
  * AN Event can span through multiple days. We split up a multiday eve
  */
-
 class OEffectiveEvent {
 public:
     typedef QValueList<OEffectiveEvent> ValueList;
     enum Position { MidWay, Start, End, StartEnd };
         // If we calculate the effective event of a multi-day event
     // we have to figure out whether we are at the first day,
     // at the end, or anywhere else ("middle"). This is important
     // for the start/end times (00:00/23:59)
     // MidWay: 00:00 -> 23:59, as we are "in the middle" of a multi-
     //         day event
     // Start: start time -> 23:59
     // End: 00:00 -> end time
     // Start | End == StartEnd: for single-day events (default)
     //                          here we draw start time -> end time
     OEffectiveEvent();
     OEffectiveEvent( const OEvent& event, const QDate& startDate, Position pos = StartEnd );
     OEffectiveEvent( const OEffectiveEvent& );
     OEffectiveEvent &operator=(const OEffectiveEvent& );
     ~OEffectiveEvent();
 
     void setStartTime( const QTime& );
     void setEndTime( const QTime& );
     void setEvent( const OEvent& );
     void setDate( const QDate& );